anti-inflammatory analgesic Pharmacokinetics usage and dosage Side effects matters need attention chemical property Uses Used in Particular Diseases methods of production Category classification of toxicity acute toxicity Combustible hazard characteristics Storage and transportation characteristics Extinguisher
ChemicalBook > CAS DataBase List > Indometacin

Indometacin

anti-inflammatory analgesic Pharmacokinetics usage and dosage Side effects matters need attention chemical property Uses Used in Particular Diseases methods of production Category classification of toxicity acute toxicity Combustible hazard characteristics Storage and transportation characteristics Extinguisher
Product Name
Indometacin
CAS No.
53-86-1
Chemical Name
Indometacin
Synonyms
Amuno;Vonum;Catlep;Tannex;Inacid;Lausit;INDOCIN;Bonidin;Mobilan;53-86-1
CBNumber
CB1750267
Molecular Formula
C19H16ClNO4
Formula Weight
357.79
MOL File
53-86-1.mol
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Indometacin Property

Melting point:
155-162 °C
Boiling point:
499.4±45.0 °C(Predicted)
Density 
1.2135 (rough estimate)
refractive index 
1.6800 (estimate)
storage temp. 
Store at RT
solubility 
ethanol: 50 mg/mL, clear, yellow-green
pka
4.5(at 25℃)
form 
White to off-white powder
Water Solubility 
Soluble in acetone (40 mg/mL - clear, yellow solution), ethanol (20 mg/mL), ether, castor oil; Soluble in chloroform (50 mg/mL - clear, yellow, extremely viscous solution); decomposed by strong alkali but stable in neutral or slightly acidic media; insoluble in water.
Sensitive 
Light Sensitive
Merck 
14,4968
BRN 
497341
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
CGIGDMFJXJATDK-UHFFFAOYSA-N
CAS DataBase Reference
53-86-1(CAS DataBase Reference)
NIST Chemistry Reference
Indomethacin(53-86-1)
EPA Substance Registry System
Indomethacin (53-86-1)
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Safety

Hazard Codes 
T+,Xi,T
Risk Statements 
28-36/37/38-39/23/24/25-23/24/25
Safety Statements 
28-36/37-45-36-26
RIDADR 
UN 2811 6.1/PG 1
WGK Germany 
3
RTECS 
NL3500000
8-10
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
I
HS Code 
29339900
Hazardous Substances Data
53-86-1(Hazardous Substances Data)
Toxicity
LD50 i.p. in rats: 13 mg/kg (Klaassen)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H300Fatal if swallowed

H341Suspected of causing genetic defects

Precautionary statements

P201Obtain special instructions before use.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
405268
Product name
Indomethacin
Purity
A non-steroidal anti-inflammatory, cell permeable, antipyretic agent.
Packaging
10gm
Price
$124
Updated
2020/08/18
Sigma-Aldrich
Product number
1341001
Product name
Indomethacin
Purity
United States Pharmacopeia (USP) Reference Standard
Packaging
200mg
Price
$366
Updated
2020/08/18
TCI Chemical
Product number
I0655
Product name
Indomethacin
Purity
>98.0%(HPLC)(T)
Packaging
25g
Price
$46
Updated
2020/06/24
TCI Chemical
Product number
I0655
Product name
Indomethacin
Purity
>98.0%(HPLC)(T)
Packaging
100g
Price
$144
Updated
2020/06/24
Alfa Aesar
Product number
A19910
Product name
Indomethacin, 98%
Packaging
25g
Price
$164
Updated
2020/06/24
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Indometacin Chemical Properties,Usage,Production

anti-inflammatory analgesic

Indomethacin is a kind of stronger corticoid anti-inflammatory and antipyretic and analgesic, by inhibiting cyclooxygenase reducing the synthesis of prostaglandin (PG), to prevent the formation of the nere impulses, inflammation tissue inhibiting inflammatory reaction, including inhibition of leukocyte chemotaxis and lysosomal enzyme release, etc., and produce antipyretic, analgesic and anti-inflammatory effects. Indomethacin anti-inflammatory, antipyretic effect is very strong, its anti-inflammatory effect is better than bute, 84 times better than hydrocortisone, and sugar cortical hormone, used in combination with aspirin, bute, can reduce their dosage, toxic and side effects, improve curative effect; Second is antipyretic effect, 10 times than amidopyrine ;its analgesic action is weak , only to the inflammatory pain has obvious analgesic effect, but the effect is good for inflammatory pain than Baotai loose, analgin and salicylic acid. Clinical is mainly used for the salicylic acid, drugs are less tolerance or curative effect is not obvious in the acute and chronic rheumatic or rheumatoid arthritis, ankylosing spondylitis, slippery bursa phlogistic, tenosynovitis, articular capsulitis, osteoarthritis and acute gout and cancerous pain, etc.In recent years, the researchers try to use indomethacin biliary colic, dysmenorrhea, migraine, glomerulonephritis, polyuria, salmonella gastroenteritis, orthostatic hypotension, bart syndrome and so on, all have good curative effect.It can also be used to treat eye pigment meningitis, keratitis, scleritis, glaucoma and fever caused by cancer or other difficult to control the fever. Dermatologist for lupus erythematosus (sle), white plug syndrome, scleroderma, nodular erythema, herpes zoster, joint type of psoriasis, etc. photosensitive dermatitis induced by topical treatment of eczema, allergic dermatitis, and local pain.

Pharmacokinetics

Oral medicine absorbed quickly and completely, can absorb more than 90% of the dosage of food with in 4 h, take medicine of acid containing aluminum and magnesium can be slightly slowed absorption, plasma protein conjugation rate is about 99%. After oral 25 mg, tmax is 1~4 h, the blood medicine peak concentration (Cmax) is 1.4 mu g/ml, when 50 mg, Cmax is 2.8 mu g/ml; Half-life (t1/2) of an average is 4.5 h, premature extended obviously. A small amount of indomethacin can through the blood-brain barrier. And through the placenta.This article in the liver metabolism go methyl chloride and chlorobenzene formyl chloride, and can be hydrolyzed into recycle indomethacin to absorb. Renal excretion from 60%, 10%~20% in prototype discharge; Part with droppings.33% from the bile excretion, 1.5% were prototype;In the breast milk also has a discharge (up to 0.5~2.0 mg daily).This product can not be dialysis to remove.

usage and dosage

1.Anti-rheumatism: adult dosage: oral: early quantity from 25 to 50 mg each time, 2~4 times a day, immediately take at food service or after a meal. Such as good tolerance, the daily dosage can be increased from 25 to 50 mg per week, the most mount should not be more than 200 mg a day. Arthritis patients such as persistent pain at night or morning stiffness, can give quantity of 100 mg in bed all day.
2. Resistance to gout: oral: At the beginning quantity is 100 mg once, then 50 mg, three times a day, until the pain relief, and then gradually reduced as soon as possible, until the drug withdrawal.
3. Antifebrile: adult dosage: oral: 25~50 mg each time, 3~4 times daily.Rectal drug delivery: every time 50 mg, 50 to 100 mg per day. Pediatric dosage: oral: 0.5~1 mg/kg each time, 3 times a day.
The above information is Chemicalbook Hanya edited.

Side effects

Adverse reactions of Indomethacin are high incidence , common adverse reactions are as follows:
1. nausea, vomiting, abdominal pain, diarrhea, anorexia, serious ulcers can occur and cause bleeding and perforation. After dinner, that can reduce the incidence.
2. common headache, dizziness, fatigue, occasional seizures, mental derangement, syncope, etc. Should be paid attention to in due course.
3.the skin pruritus, erythema, urticaria, and one of the few of asthma, breathing problems and even breathing, circulation inhibition.
4.Inhibition of hematopoietic system such as granulocytopenia, aplastic anemia, thrombocytopenia, and so on. Although rare, but more severe consequences.There are also some other similar to aspirin reaction, notes are also the same.

matters need attention

1.indomethacin and aspirin have cross allergic. Caused by aspirin allergic asthmatic patients, the application of this product can be induced bronchospasm. Other non steroidal anti-inflammatory drugs to which are allergic may also be allergic to this product.
2.This product is contraindicated with active ulcer disease, ulcerative colitis and history, epilepsy, Parkinson's disease, mental disease, liver and kidney function, the goods or aspirin or other nonsteroidal anti-inflammatory drug allergic person, angioedema or bronchial asthma. This product for the last 3 months of pregnancy can make fetal ductus arteriosus closure and result in persistent pulmonary hypertension, so pregnant women, disabled. This product can be discharged from the milk, breast-feeding women also disable.
3.This product is used for patients with cardiac insufficiency, and hypertension (because this product sodium can lead to water retention, hemophilia and other patients with hemorrhagic disease (because this product can make the bleeding time prolonged, aggravate bleeding tendency), aplastic anemia, granulocytopenia disease patients (this product is inhibition of hematopoietic system).Age < 14 years old children should not be commonly used drug, When it is applied,it should be closely observed.Easily occur in elderly patients with renal toxicity, which should also be careful.
4.Because indomethacin has inhibition to the platelet aggregation, which can make the bleeding time prolonged, the role after the drug was stopped sustainable. During the blood urea nitrogen and serum creatinine,levels are also often higher. During the medication,it should be regularly check routine blood and liver and kidney function. Case reports referred to in this article that the product can lead to corneal composure and retinal change (including macular degeneration), if it comes to the blurred vision eye exams should be done immediately.
5.Drug overdose (especially when dose > 150 mg a day) is easy to cause toxic reactions such as nausea, vomiting, tension headaches, sleepiness, spirit, behavior disorders, etc., with vomiting or gastric lavage, symptomatic and supportive treatment.

chemical property

White or slightly yellow crystalline powder. Melting point is 158-162℃, soluble in acetone, slightly soluble in ethanol, chloroform, ether, almost insoluble in water.

Uses

1.The product is anti-inflammatory, and antipyretic effect is obvious, mainly is used for salicylates to tolerance or the effect is not significant rheumatism and arthritis, ankylosing light spondylitis, osteoarthritis.
2.Non steroid anti-inflammatory analgesic

Used in Particular Diseases

Acute Gouty Arthritis:
Dosage and Frequency: 25–50 mg four times a day for 3 days, then taper to twice daily for 4–7 days

methods of production

Para aminophenylmethylether is through diazotization, reduction, cyclization, hydrolysis, acidification to get indomethacin.

Category

Poisonous

classification of toxicity

Highly toxic.

acute toxicity

Oral administration: LD50 2.42 mg/kg in rats; oral administration of 11.84 mg/kg of LD50: in mice.

Combustible hazard characteristics

Open flame fuel; high heat decomposition of toxic chloride and nitrogen oxide gas.

Storage and transportation characteristics

Low temperature and dry air ventilation; and oxidant, food additives separately.

Extinguisher

Foam, fog water, sand, carbon dioxide.

Description

Aqueous solutions of indomethacin are not stable because of the ease of hydrolysis of the p-chlorobenzoyl group. The original synthesis of indomethacin by Shen et al. involved the formation of 2-methyl-5-methoxyindole acetic acid and subsequent acylation after protection of the carboxyl group as the t-butyl ester. It was introduced in the United States in 1965. It is still one of the most potent NSAIDs in use. It also is a more potent antipyretic than either aspirin or acetaminophen, and it possesses approximately 10 times the analgetic potency of aspirin.

Chemical Properties

Crystalline Solid

Originator

Indocin,MSD,US,1965

Uses

Inhibits cyclooxygenase (IC50=0.1uM) selectively over liposygenases (IC50=100uM for 5-,12- and 15-LO). A clinically useful NAISD

Uses

antiinflammatory, antipyretic, analgesic

Indications

Indomethacin (Indocin) is used in the treatment of acute gouty arthritis, rheumatoid arthritis, ankylosing spondylitis, and osteoarthritis. It is not recommended for use as a simple analgesic or antipyretic because of its potential for toxicity.While indomethacin inhibits both COX-1 and COX-2, it is moderately selective for COX- 1. It produces more CNS side effects than most of the other NSAIDs. Severe headache occurs in 25 to 50% of patients; vertigo, confusion, and psychological disturbances occur with some regularity. GI symptoms also are more frequent and severe than with most other NSAIDs. Hematopoietic side effects (e.g., leukopenia, hemolytic anemia, aplastic anemia, purpura, thrombocytopenia, and agranulocytosis) also may occur. Ocular effects (blurred vision, corneal deposits) have been observed in patients receiving indomethacin, and regular ophthalmological examinations are necessary when the drug is used for long periods. Hepatitis, jaundice, pancreatitis, and hypersensitivity reactions also have been noted.

Definition

The antiinflammatory drug indomethacin.

Manufacturing Process

(A) 2-Methyl-5-Merhoxy-3-Indolylacetic Anhydride: Dicyclohexylcarbodiimide (10 g, 0.049 mol) is dissolved in a solution of 2-methyl-5-methoxy-3-indolylacetic acid (22 g, 0.10 mol) in 200 ml of THF, and the solution is allowed to stand at room temperature for 2 hours. The precipitated urea is removed by filtration, and the filtrate is evaporated in vacuo to a residue and flushed with Skellysolve 6. The residual oily anhydride is used without purification in the next step.
(B) t-Butyl 2-Methyl-5-Merhoxy-3-Indolylacetate: t-Butyl alcohol (25 ml) and fused zinc chloride (0.3 g) are added to the anhydride from Part A. The solution is refluxed for 16 hours and excess alcohol is removed in vacuo. The residue is dissolved in ether, washed several times with saturated bicarbonate, water, and saturated salt solution. After drying over magnesium sulfate, the solution is treated with charcoal, evaporated, and flushed several times with Skellysolve B for complete removal of alcohol. The residual oily ester (18 g, 93%) is used without purification.
(C) t-Buryl 1-p-Chlorobenzoyl-2-Methyl-5-Mefhoxy-3-Indolylacetate: A stirred solution of ester (18 g, 0.065 mol) in dry DMF (450 ml) is cooled to 4°C in an ice bath, and sodium hydride (4.9 g, 0.098 mol, 50% susp.) is added in portions. After 15 minutes, p-chlorobenzoyl chloride (15 g, 0.085 mol) is added dropwise during 10 minutes, and the mixture is stirred for 9 hours without replenishing the ice bath. The mixture is then poured into one liter of 5% acetic acid, extracted with a mixture of ether and benzene, washed thoroughly with water, bicarbonate, saturated salt, dried over magnesium sulfate, treated with charcoal, and evaporated to a residue which partly crystallizes. This is shaken with ether, filtered and the filtrate is evaporated to a residue (17 g) which solidifies after being refrigerated overnight.
The crude product is boiled with 300 ml of Skellysolve 6, cooled to room temperature, decanted from some gummy material, treated with charcoal, concentrated to 100 ml, and allowed to crystallize. The product thus obtained (10 g) is recrystallized from 50 ml of methanol and gives 4.5 g of analytically pure material, MP 103° to 104°C.
(D) 1 -p-Chlorobenzoyl-2-Methyl-5-Methoxy-3-Indolylacetic Acid: A mixture of 1 g ester and 0.1 g powdered porous plate is heated in an oil bath at 210°C with magnetic stirring under a blanket of nitrogen for about 2 hours. No intensification of color (pale yellow) occurs during this period. After cooling under nitrogen, the product is dissolved in benzene and ether, filtered, and extracted with bicarbonate. The aqueous solution is filtered with suction to remove ether, neutralized with acetic acid, and then acidified weakly with dilute hydrochloric acid. The crude product (0.4 g, 47%) is recrystallized from aqueous ethanol and dried in vacuo at 65°C: MP 151°C.

brand name

Indocin (Merck);Argan.

Therapeutic Function

Antiinflammatory

World Health Organization (WHO)

Indometacin was introduced in 1963 and it is one of the first NSAIDs. Convulsions are rarely reported in relation with the use of this group of agents. Indometacin farnesil is a pro-drug of indometacin, and the occurrence of gastro-intestinal adverse effects could be expected. See also under nonsteroidal antiinflammatory agents.

Biological Functions

Indomethacin (Indocin) is an acetic acid derivative related functionally to sulindac (Clinoril), a prodrug with a long half-life, and etodolac (Lodine).They are metabolized in the liver and excreted as metabolites in the bile and via the kidney. They are potent inhibitors of COX and thus extremely effective antiinflammatory agents.

General Description

From the time of its introduction in 1965, indomethacin(Indocin) has been widely used as an analgesic to relieve inflammatorypain associated with RA, OA and ankylosingspondylitis, and, to a lesser extent, in gout. Although both itsanalgesic and anti-inflammatory activities are well established,its use is often limited because of frequent GI distressand potential drug interactions, especially with warfarinfurosemide, and lithium (i.e., it elevates blood levels oflithium as a result of reducing renal blood flow and thereforeincreases lithium toxicities).
Following oral administration, indomethacin is rapidlyabsorbed and is 90% protein bound at therapeutic plasmaconcentrations. The drug has a biological half-life ofabout 5 to 10 hours and a plasma clearance of 1 to 2.5 ml/kgper minute. It is metabolized to its inactive, O-desmethyl,N-deschlorobenzoyl-, and O-desmethyl, N-deschlorobenzoylindomethacinmetabolites.

General Description

Crystals.

Air & Water Reactions

Practically insoluble in water. Decomposes in alkali.

Reactivity Profile

A weak organic acid.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Pharmaceutical Applications

Indomethacin is a nonsteroidal anti-inflammatory agent used in pain and moderate to severe inflammation in rheumatic diseases and other musculoskeletal disorders. It is a COX (cyclooxygenase) inhibitor and therefore interrupts the production of prostaglandins.
A series of new silicon compounds, based on the structure of indomethacin, have been synthesised and are under investigation as novel anticancer agents. The carboxyl group of indomethacin was reacted with a series of amino-functionalised silanes. The resulting products have been shown to be significantly more lipophilic and more selective to COX-2. Furthermore, in vitro testing has shown an increased uptake of the new compounds at the tumour site. The silane-functionalised indomethacin derivatives exhibited a 15-fold increased antiproliferative effect when tested against pancreatic cancer .

Pharmaceutical Applications

Indomethacinis a nonsteroidal anti-inflammatory agent used in pain and moderate to severe inflammation in rheumatic diseases and other musculoskeletal disorders. It is a COX (cyclooxygenase) inhibitor and therefore interrupts the production of prostaglandins.

Biological Activity

Cyclooxgenase (COX) inhibitor; displays selectivity for COX-1 (IC 50 values are 230 and 630 nM for human COX-1 and COX-2 respectively). Widely used anti-inflammatory agent.

Clinical Use

Indomethacin is available for the short-term treatment of acute gouty arthritis, acute pain of ankylosing spondylitis, and osteoarthritis. An injectable form to be reconstituted also is available as the sodium trihydrate salt for IV use in premature infants with patent ductus arteriosus. Because of its ability to suppress uterine activity by inhibiting prostaglandin biosynthesis, indomethacin also has an unlabeled use to prevent premature labor.

Side effects

All of these drugs produce analgesic effects, antipyresis, and antiinflammatory effects.Due to the high incidence of gastric irritation, headache, nausea, and other side effects, including hematological effects and coronary vasoconstriction, they are not useful as an initial treatment for pain. GI irritation and ulceration occur to a lesser extent with etodolac. Indomethacin is useful in the treatment of acute gout, osteoarthritis, ankylosing spondylitis, and acceleration of the closure of the ductus arteriosus in premature infants. The tocolytic effects of indomethacin to prevent preterm labor are the result of its effects on prostaglandin synthesis. However, the toxicity of the drug limits such application, since it increases fetal morbidity. Indomethacin is contraindicated in pregnancy, in asthmatics, and in those with gastric ulcers or other ulceration of the GI tract. Indomethacin may increase the symptoms associated with depression or other psychiatric disturbances and those associated with epilepsy and Parkinson’s disease. The drug should be used with caution in such patients.

Indometacin Preparation Products And Raw materials

Raw materials

Preparation Products

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Indometacin Suppliers

Beijing NuoqiYa Biotechnology Co., Ltd.
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4000-819-385 010-62329685 13718666987
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Wuhan Xingqi Biotechnology Co., Ltd.
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Wuhan Wiseman Bioengineering Co.,Ltd
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J & K SCIENTIFIC LTD.
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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3B Pharmachem (Wuhan) International Co.,Ltd.
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Alfa Aesar
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400-610-6006; 021-67582000
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TAIYUAN RHF CO.,LTD.
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View Lastest Price from Indometacin manufacturers

WUHAN CIRCLE POWDER TECHNOLOGY CO.,LTD
Product
Indometacin 53-86-1
Price
US $0.00/KG
Min. Order
100g
Purity
98%+
Supply Ability
100kg
Release date
2020-09-15
Longyan Tianhua Biological Technology Co., Ltd
Product
Indometacin 53-86-1
Price
US $28.00/Kg/Bag
Min. Order
1Kg/Bag
Purity
99%
Supply Ability
20 Tons
Release date
2020-10-28
Shaanxi Dideu Medichem Co. Ltd
Product
Indometacin 53-86-1
Price
US $1.00-1.00/KG
Min. Order
1g
Purity
99%
Supply Ability
50tons
Release date
2020-05-07

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