Abstract Chemical Property Mechanism of action Pharmacokinetic Study Attention and Taboo Preparation Acute toxicity Flammability hazard properties Storage characteristics Extinguishing agent References
ChemicalBook > CAS DataBase List > Phenylbutazone

Phenylbutazone

Abstract Chemical Property Mechanism of action Pharmacokinetic Study Attention and Taboo Preparation Acute toxicity Flammability hazard properties Storage characteristics Extinguishing agent References
Product Name
Phenylbutazone
CAS No.
50-33-9
Chemical Name
Phenylbutazone
Synonyms
PBZ;Benzone;4-Phenylbutazone;Bute;Butone;Azolid;Butalan;Butadione;Baotaisong;Butazolidin
CBNumber
CB0370134
Molecular Formula
C19H20N2O2
Formula Weight
308.37
MOL File
50-33-9.mol
More
Less

Phenylbutazone Property

Melting point:
106-108 °C (lit.)
Boiling point:
448.76°C (rough estimate)
Density 
1.1591 (rough estimate)
refractive index 
1.6140 (estimate)
storage temp. 
2-8°C
solubility 
Practically insoluble in water, sparingly soluble in alcohol. It dissolves in alkaline solutions.
form 
Powder
pka
4.5(at 25℃)
color 
White to almost white
Water Solubility 
<0.1 g/100 mL at 23.5 ºC
Merck 
14,7277
BRN 
290080
Stability:
Stable. Incompatible with strong oxidizing agents, strong acids, strong bases.
InChIKey
VYMDGNCVAMGZFE-UHFFFAOYSA-N
LogP
3.160
CAS DataBase Reference
50-33-9(CAS DataBase Reference)
NIST Chemistry Reference
Phenylbutazone(50-33-9)
IARC
3 (Vol. 13, Sup 7) 1987
EPA Substance Registry System
Phenylbutazone (50-33-9)
More
Less

Safety

Hazard Codes 
Xn,T,F
Risk Statements 
36/37/38-20/21/22-42/43-45-36-11
Safety Statements 
36/37/39-26-45-22-53-36/37-16
RIDADR 
3249
WGK Germany 
3
RTECS 
UQ8225000
TSCA 
Yes
HazardClass 
6.1(b)
PackingGroup 
III
HS Code 
29331990
Hazardous Substances Data
50-33-9(Hazardous Substances Data)
Toxicity
LD50 oral in rabbit: 781mg/kg
More
Less

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H301Toxic if swalloed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

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

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

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

More
Less

N-Bromosuccinimide Price

Sigma-Aldrich
Product number
PHR2607
Product name
Phenylbutazone
Packaging
500MG
Price
$173
Updated
2024/03/01
Sigma-Aldrich
Product number
1531007
Product name
Phenylbutazone
Purity
United States Pharmacopeia (USP) Reference Standard
Packaging
250mg
Price
$436
Updated
2024/03/01
Sigma-Aldrich
Product number
79184
Product name
Phenylbutazone
Purity
analytical standard
Packaging
50mg
Price
$59.1
Updated
2022/05/15
TCI Chemical
Product number
P1686
Product name
Phenylbutazone
Purity
>98.0%(HPLC)(T)
Packaging
25g
Price
$32
Updated
2024/03/01
TCI Chemical
Product number
P1686
Product name
Phenylbutazone
Purity
>98.0%(HPLC)(T)
Packaging
500g
Price
$242
Updated
2024/03/01
More
Less

Phenylbutazone Chemical Properties,Usage,Production

Abstract

Phenylbutazone, often referred to as "bute,"is a nonsteroidal  anti-inflammatory, antipyretic, and analgesic drug (NSAID) for the short-term treatment of pain and fever results from rheumatoid arthritis, ankylosing spondylitis, gouty arthritis, and osteoarthritis.
Phenylbutazone has been removed from the United States market due to the availability of newer drugs with less adverse effects. Phenylbutazone is a nonsteroidal anti-inflammatory drug (NSAID) effective in treating fever, pain, and inflammation in the body. As a group, NSAIDs are non-narcotic relievers of mild to moderate pain of many causes, including injury, menstrual cramps, arthritis and other musculoskeletal conditions.

Chemical Property

It is soluble in acetone, chloroform or benzene freely; soluble in ethanol or ether; hardly soluble in water; soluble in sodium hydroxide solution.

Mechanism of action

Recent studies have found that the generating mechanism from phenylbutazone anti-inflammatory, analgesic and anti-rheumatic effect is not due to pituitary-adrenal excitement may be due to drugs that inhibit the generation of inflammatory tissue inflammation related active substances, such as synthesis of prostaglandins, white blood cells activities and transfer, release and activity of lysosomal enzymes; pain may also inhibit prostaglandin synthesis results.

Pharmacokinetic Study

Oral absorption effect is quickly and completely, reached the peak plasma concentration after about 2 hours. Plasma protein binding rate is 98%. The apparent volume of distribution is 0.12L/kg, such as increasing the dose, volume of distribution has also increased, but the blood concentration does not increase. Therefore, when using repeatedly, the steady-state plasma concentration does not increase linearly. The half-life is 56 to 86 hours. It can cross the placenta into the milk. This product is metabolized by the liver, metabolites is hydroxy phenylbutazone and γ-hydroxy phenylbutazone, still active, The final metabolites are excreted in urine and a small amount of bile is excreted through the urine.

Attention and Taboo

The side effects of phenylbutazone incidence rate is about 10%~20%, gastrointestinal irritation can cause nausea, vomiting, abdominal pain, constipation, overdose can cause peptic ulcer, blood in the stool. Damages also occur in other systems, such as rash, dizziness, hematuria, hepatitis, etc. Inhibit the bone marrow caused by neutropenia, or even aplastic anemia, such as the timely withdrawal is more recoverable and therefore should be ground check blood, no effect by 1 week, should not be reused. And double coumarin anticoagulants, sulfonamides, tolbutamide hypoglycemic drugs, increase the plasma concentration, toxicity increases. Sodium, chlorine retention effect, hypertension, edema, heart failure patients cannot use it and limit salt intake during the treatment. Patients with weak liver, osteoporosis, and kidney as well as drug allergy history are contraindicated or appropriate caution.

Preparation

Cyclization reaction of hydrogenated azobenzene and diethylmalonic acid diethyl: hydrazobenzene, butyl diethyl malonate, sodium sulfite and methanol are heated with severe reflux 1.5h, born in Bute salt, acidified with acetic acid to give Bute.

Acute toxicity

oral-rat LD50: 245 mg/kg; Oral-Mouse LD50: 270 mg/kg
Irritation Data: Eye – rabbit, 100 mg, moderate

Flammability hazard properties

thermal decomposition emitted poisonous nitrogen oxides fumes

Storage characteristics

Treasury ventilation low-temperature drying; and food raw materials stored separately

Extinguishing agent

Water, carbon dioxide, dry powder, foam

References

https://en.wikipedia.org/wiki/Phenylbutazone
https://pubchem.ncbi.nlm.nih.gov/compound/phenylbutazone#section=Top
http://www.medicinenet.com/phenylbutazone/article.htm

Description

Phenylbutazone, one of the earliest NSAIDs introduced, is now indicated for the symptomatic relief of rheumatoid arthritis, osteoarthritis, psoriatic arthritis, ankylosing spondylitis, gout, and acute superficial thrombophlebitis. The gastrointestinal and bone marrow toxicity observed in its early use have been greatly reduced by lower dosage (300 mg/d). Nevertheless, it is used primarily where other drugs have failed and then only for short-term therapy. The drug has a long serum half-life of about 100 h. It is a moderately active cyclooxygenase inhibitor and it suppresses both spontaneous and chemotactic motility of neutrophils. In addition to the serious gastrointestinal and hematological adverse effects, sodium and water retention, rash, vertigo, and dermatitis are observed.

Chemical Properties

Off-Whtie Solid

Originator

Butazolidin, Geigy ,US,1952

Uses

A non-steroidal anti-inflammatory compound. An inhibitor of cyclooxygenase that is also a substrate for peroxidation by cyclooxygenase

Uses

For the treatment of backache and ankylosing spondylitis

Uses

An inhibitor of Cox.

Uses

Phenylbutazone, a nonsteroidal anti-inflammatory drug, is an efficient reducing cofactor for the peroxidase activity of COX. Phenylbutazone-dependent inactivation of COX and prostacyclin synthase is markedly increased in the presence of 100 μM hydrogen peroxide with half-maximal effects at Phenylbutazone concentrations of 100 and 25 μM for COX and prostacyclin synthase, respectively.

Definition

ChEBI: Phenylbutazone is a member of the class of pyrazolidines that is 1,2-diphenylpyrazolidine-3,5-dione carrying a butyl group at the 4-position. It has a role as a non-narcotic analgesic, a non-steroidal anti-inflammatory drug, an antirheumatic drug, a peripheral nervous system drug, a metabolite and an EC 1.1.1.184 [carbonyl reductase (NADPH)] inhibitor.

Manufacturing Process

7.6 parts of sodium are dissolved in 190 parts by volume of absolute alcohol; 65 parts of diethyl-n-butyl malonate and 65 parts of hydrazobenzene are added. The alcohol is slowly distilled off and the reaction mixture heated for 12 hours at a bath temperature of 150°C and finally in vacuo, until no more alcohol comes off.
The product is dissolved in water, clarified with a little animal charcoal and 15% hydrochloric acid is slowly added until an acid reaction to Congo red paper is produced. 1,2-Diphenyl-3,5-dioxo-4-n-butyl-pyrazolidine separates as an oil, which rapidly become crystalline. It crystallizes from alcohol as colorless needles with a MP of 105°C.

brand name

Azolid (Sanofi Aventis); Butazolidin (Novartis);Algesin;Algirreudin;Algoverine;Alka butazolidin;Alkabutazone;Alka-phenylbutazone;Alka-sterazolidin;Anarthral;Apophenylbutazone;Apo-phenylbutazone;Arteopan;Arthirikin;Artibrin;Artrisin;Artrodesmol extra;Bizolin 20;Bizolin 700;Butacal;Butacol;Butadilat;Butadin;Butadyne;Butafenil;Butagros;Butakvertin;Butaparin;Butaphen;Buta-phen;Butarex;Butartiril;Butatril;Butazolidin alka;Butazolidina;Butial;Butinol;Butiwas;Buto beta;Butoroid cream;Butrex;Carudol;Celestalgon;Celestazone;Colfezone;Corbuvit;Dartranol;Debutazon;Delta-butazolidin;Delta-demoplas;Delta-myogit;Delta-tomanol;Deltawaukobuzon;Dephimixn;Dexa tomanol;Dexa-attritin;Dexa-escopyrin;Dexamed;Dexatrzona;Dibuzon;Direstop;Ditrone;Doctofril;Dolosin dexa;Dolpirina;Ectobutazone;Ethibute;Exraheudon;Exrheudon;F 650;Fenibutina;Flebosil;Glycyl;Hepabuzon;Inflazone;Intrabuzone;Mammyl;Megazone;Mepha-butazone;Mepropyrin;Mi 540;Naupax;Neuro-demoplas;Neuzoline m;Novobutazone;Oluprin;Oppazoen;Osadrinim;Parazolidin;Parzolidon;Pasirheuman;Penetradol;Phenbuff;Phenbutazone;Phenylarthrite;Phenylbetazone;Phenylon plus;Phlebolan;Pirabutil;Pirarreumol-b;Pirarreumol-p;Prebutex;Precirhemin;Prednirheumin;Proxyfezone;Proydynam;Pyrbutal;Ranocor;Reopin;Reumilene;Rheopyrin;Rheosolon;Rheumanoln;Rheumaphen;Rheumycalm;Salzone;Servizolidin;Sigma-elmedal;Sintobutina;Stabilat;Tevocodyn;Tibutazone;Ticinil calcio;Ticinil calico;Trabit;Zolapelin;Zolidinium.

Therapeutic Function

Antiinflammatory, Antiarthritic

World Health Organization (WHO)

Phenylbutazone, a pyrazolone derivative with anti-inflammatory, analgesic and antipyretic activity, was introduced in 1949 for the treatment of rheumatic disorders. Its use was subsequently associated with serious and sometimes fatal adverse reactions, notably cases of aplastic anaemia and agranulocytosis. Many national drug regulatory authorities consider that more recently introduced drugs offer a safer alternative for most, if not all, patients requiring anti-inflammatory agents. Phenylbutazone has thus been either withdrawn at the national level or retained with rigorously restricted indications for patients unresponsive to other therapy. These restrictions also apply, in general, to combination products containing phenylbutazone.

General Description

Odorless white or off-white crystalline powder. Tasteless at first, but slightly bitter aftertaste. pH (aqueous solution) 8.2.

Air & Water Reactions

Phenylbutazone is relatively stable at ambient temperatures. Aqueous decomposition of Phenylbutazone occurs by hydrolysis and oxidation. Insoluble in water.

Reactivity Profile

Phenylbutazone is incompatible with strong oxidizers, strong acids and strong bases. .

Fire Hazard

Flash point data for Phenylbutazone are not available; however, Phenylbutazone is probably combustible.

Biochem/physiol Actions

Phenylbutazone is a hepatotoxin and binds to plasma proteins. It is used to treat inflammation in horse. Phenylbutazone has potential to treat ankylosing spondylitis. It has therapeutic potential to treat myotonic dystrophy type 1 (DM1) by inducing muscle blind-like protein 1 (MBNL1) expression. It also favors the expression of muscle chloride channel in skeletal muscles.

Clinical Use

Phenylbutazone is a nonsteroidal anti-inflammatory drug used for the acute treatment of ankylosing spondylitis, chronic polyarthritis, and gout. Because of severe side effects including disturbances of the hematopoietic system like agranulocytosis and aplastic anemia the use is limited to conditions in which other nonsteroidal antiinflammatory drugs do not show sufficient efficacy. Phenylbutazone is given as oral, rectal, intramuscular or topical formulation (up to 600 mg/d initial dose, up to 400 mg/d maintenance dose). The peak plasma concentration is reached 2 h after oral application. Phenylbutazone is bound to 98% to plasma protein. Oxyphenbutazone is formed as an active metabolite of phenylbutazone.

Safety Profile

Suspected human carcinogen producing leukemia. A human poison by parenteral route. An experimental poison by ingestion, intraperitoneal, subcutaneous, intravenous, and intramuscular routes. Human systemic effects by ingestion and possibly other routes: fever, blood pressure increase, other unspecified vascular effects, damage to kidney tubules and glomeruli, decreased urine volume, blood in the urine, reduction in the number of whte blood cells, and agranulocytosis. Experimental teratogenic and reproductive effects. Human mutation data reported. An eye irritant. An antiinflammatory agent. When heated to decomposition it emits toxic fumes of NOx

Synthesis

Phenylbutazone, 4-butyl-1,2-diphenyl-3,5-pyrazolidinedione (3.2.6), is synthesized in a single stage by reacting hydrazobenzol with butylmalonic ester [68,69].

Veterinary Drugs and Treatments

One manufacturer lists the following as the indications for phenylbutazone: “For the relief of inflammatory conditions associated with the musculoskeletal system in dogs and horses.” (Package Insert; Butazolidin?—Coopers). It has been used primarily for the treatment of lameness in horses and, occasionally, as an analgesic/ antiinflammatory, antipyretic in dogs, cattle, and swine.

Purification Methods

Crystallise the dione from EtOH. Its pK2 3 is 4.52 (in H2O), 4.89 (in 50% aqueous EtOH) and 5.25 (80% 2-methoxyethanol). It complexes with Hg2+, Cd2+ and Zn2+. It has UV with max at 239.5nm in MeOH+50% aqueous HClO4 and 264nm in aqueous 0.1N NaOH. [Beilstein 24 III/IV 1123.]

Phenylbutazone Preparation Products And Raw materials

Raw materials

Preparation Products

More
Less

Phenylbutazone Suppliers

Clearsynth Labs Limited
Tel
+91-22-26355700
Fax
+91-22-26355701
Email
info@clearsynth.com
Country
India
ProdList
9679
Advantage
58
Jai Radhe Sales
Tel
+(91)-(79)-26431096/65255722
Fax
+(91)-(79)-26569884
Email
info@jairadhesales.com
Country
India
ProdList
397
Advantage
60
TCI Chemicals (India) Pvt. Ltd.
Tel
--
Fax
--
Email
sales-in@tcichemicals.com
Country
India
ProdList
6768
Advantage
58
Athos Chemicals
Tel
--
Fax
--
Email
export@athoschemicals.com
Country
India
ProdList
315
Advantage
58
Megha Health Care Pvt., Ltd.
Tel
--
Fax
--
Email
meghahealthcare@hotmail.com
Country
India
ProdList
126
Advantage
58
Metro Exporters Pvt. Ltd.
Tel
--
Fax
--
Email
metro@metroexporters.net
Country
India
ProdList
204
Advantage
58
Gemini Exports
Tel
--
Fax
--
Email
uiry@geminiexpor
Country
India
ProdList
140
Advantage
58
Pharmaffiliates Analytics & Synthetics (P) Ltd.
Tel
--
Fax
--
Email
g@pharmaffiliates.com
Country
India
ProdList
631
Advantage
58
Swati Chemicals
Tel
--
Fax
--
Country
India
ProdList
16
Advantage
58
Shreeji Pharma International
Tel
--
Fax
--
Country
India
ProdList
166
Advantage
58
Innorex Pharmaceuticals Private Limited
Tel
--
Fax
--
Email
info@innorexpharma.com
Country
India
ProdList
173
Advantage
58
Aligns International
Tel
--
Fax
--
Email
info@aligns.in
Country
India
ProdList
137
Advantage
58
VARAHI INTERNATIONAL
Tel
--
Fax
--
Country
India
ProdList
22
Advantage
58
Global Chem Asia Pacific
Tel
--
Fax
--
Email
ghu@globalchem.in
Country
India
ProdList
255
Advantage
58
Aarambh Life Science
Tel
--
Fax
--
Country
India
ProdList
16
Advantage
58
Pharma Affiliates
Tel
--
Fax
--
Email
@pharmaffiliates.com
Country
India
ProdList
6754
Advantage
58
Sonachi Group
Tel
--
Fax
--
Email
huntas@gmail.com
Country
India
ProdList
35
Advantage
58
Omicron Pharma
Tel
--
Fax
--
Email
info@omicronpharma.in
Country
India
ProdList
11
Advantage
58
Reine Lifescience
Tel
--
Fax
--
Email
reinelifescience@gmail.com
Country
India
ProdList
4
Advantage
58
Tradeimpex International
Tel
--
Fax
--
Email
info@tradeimpexintl.com
Country
India
ProdList
64
Advantage
58
J. C. Enterprises
Tel
--
Fax
--
Email
ronak@jcenterprises.in
Country
India
ProdList
94
Advantage
58
WorldChem Trading Corporation
Tel
--
Fax
--
Email
biz@dyeschemical.com
Country
India
ProdList
59
Advantage
58
Sudarshan Group
Tel
--
Fax
--
Email
vijaya@sudarshangrp.com
Country
India
ProdList
40
Advantage
58
Dolace Solutions Private Limited
Tel
--
Fax
--
Email
info@dolacesolutions.com
Country
India
ProdList
240
Advantage
58
Afton Pharma
Tel
--
Fax
--
Email
info@aftonpharma.com
Country
India
ProdList
40
Advantage
58
Clearsynth Labs
Tel
--
Fax
--
Email
fo@clearsynth.com
Country
India
ProdList
3887
Advantage
58
Pharmchem
Tel
--
Fax
--
Email
nipun@phrmchem.net
Country
India
ProdList
38
Advantage
58
Zeal Medipharma (Export) Private Limited.
Tel
--
Fax
--
Email
export3@zealmedipharmaexport.com
Country
India
ProdList
84
Advantage
58
bm chemie
Tel
--
Fax
--
Country
India
ProdList
82
Advantage
58
Ralington Pharma
Tel
--
Fax
--
Email
info@ralingtonpharma.com
Country
India
ProdList
312
Advantage
58
B. Shah & Sons
Tel
--
Fax
--
Country
India
ProdList
79
Advantage
58
J. K. Promotions
Tel
--
Fax
--
Email
jkpromotions@gmail.com
Country
India
ProdList
138
Advantage
58
Siddharth International
Tel
--
Fax
--
Country
India
ProdList
107
Advantage
58
HiMedia Laboratories
Tel
--
Fax
--
Email
o@himedialabs.com
Country
India
ProdList
1841
Advantage
58
B Joshi Agrochem Pharma
Tel
--
Fax
--
Country
India
ProdList
181
Advantage
58
Gansai International
Tel
--
Fax
--
Email
gansai@bsnl.in
Country
India
ProdList
159
Advantage
58
Aadivighnesh Chem Private Ltd.
Tel
--
Fax
--
Email
sales@aadivighnesh.com
Country
India
ProdList
119
Advantage
58
Jai Radhe Sales
Tel
--
Fax
--
Email
nikunj@jairadhesales.com
Country
India
ProdList
157
Advantage
57
Doshil
Tel
--
Fax
--
Country
India
ProdList
117
Advantage
58
Euroasia Trans Continental
Tel
--
Fax
--
Email
eurasia@vsnl.com
Country
India
ProdList
518
Advantage
47
SynZeal Research Pvt Ltd
Tel
--
Fax
--
Email
standards@synzeal.com
Country
India
ProdList
6514
Advantage
58
Index
Tel
--
Fax
--
Country
India
ProdList
19
Advantage
58
Triveni Interchem Private Limited (Group Of Triveni...
Tel
--
Fax
--
Country
India
ProdList
497
Advantage
58
Achyut Pharma
Tel
--
Fax
--
Country
India
ProdList
2
Advantage
58
Central Drug House(P) Ltd.
Tel
--
Fax
--
Email
sales@cdhfinechemical.com
Country
India
ProdList
6157
Advantage
58
Pharmaffiliates Analytics and Synthetics P. Ltd
Tel
--
Fax
--
Email
mktg@pharmaffiliates.com
Country
India
ProdList
6739
Advantage
58
CHEMSWORTH
Tel
--
Fax
--
Email
info@chemsworth.com
Country
India
ProdList
6700
Advantage
30
OCEAN TRADING CORPORATION
Tel
--
Fax
--
Email
otcchem@otcchem.com
Country
India
ProdList
6202
Advantage
58
More
Less

View Lastest Price from Phenylbutazone manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
Phenylbutazone 50-33-9
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
98%-102%; USP
Supply Ability
1000KGS
Release date
2021-07-28
Hebei Weibang Biotechnology Co., Ltd
Product
Phenylbutazone 50-33-9
Price
US $10.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100 mt
Release date
2024-11-20
BEIJING SJAR TECHNOLOGY DEVELOPMENT CO., LTD.
Product
Phenylbutazone 50-33-9
Price
US $0.00/g
Min. Order
1g
Purity
More Than 99%
Supply Ability
100kg/Month
Release date
2024-09-20

50-33-9, PhenylbutazoneRelated Search:


  • PHENYLBUTAZONE
  • 1,2-Diphenyl-2,3-dioxo-4-N-butylpyrazoline
  • 1,2-Diphenyl-3,5-dioxo-4-butylpyrazolidine
  • 1,2-Diphenyl-4-butyl-3,5-dioxopyrazolidine
  • 1,2-Diphenyl-4-butyl-3,5-pyrazolidinedione
  • Benzone
  • Betazed
  • bizolin
  • Bizolin 200
  • bizolin200
  • Bunetzone
  • Busone
  • Buta phen
  • Butacompren
  • Butacote
  • Butadion
  • Butadiona
  • Butadione
  • Butagesic
  • Butalan
  • Butalgina
  • Butalidon
  • Butaluy
  • Butapirazol
  • Butapirazole
  • Butapyrazole
  • Butarecbon
  • Butartril
  • Butartrina
  • Butazina
  • Butazolidin
  • Butazolidine
  • Butazona
  • Butazone
  • Bute
  • Butidiona
  • Butiwas-Simple
  • Butone
  • Butoz
  • Butylpyrin
  • Buvetzone
  • Buzon
  • Chembutazone
  • component of Azolid-A
  • DA-192
  • g13871
  • Ia-But
  • Intalbut
  • Intrabutazone
  • Intrazone
  • Ipsoflame
  • Kadol
  • Lingel
  • Malgesic
  • Mephabutazon
  • Mephabutazone
  • Merizone
  • Nadazone