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Flavoxate hydrochloride

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Flavoxate hydrochloride Basic information

Product Name:
Flavoxate hydrochloride
Synonyms:
  • FLAVOMYCINPREMIX
  • 1-piperidineethanol,3-methyl-4-oxo-2-phenyl-4h-1-benzopyran-8-carboxylate,h
  • 2-piperidinoethyl-3-methyl-4-oxo-2-phenyl-4h-1-benzopyran-8-carboxylatehydro
  • 3-methyl-4-oxo-2-phenyl-4h-1-benzopyran-8-carboxylicaci2-piperidinoethyl
  • bladderon
  • Urispas
  • Flavoxate hydrochloride,3-Methyl-4-oxo-2-phenyl-4H-1-benzopyran-8-carboxylic acid 2-(1-piperidinyl)ethyl ester hydrochloride, DW-61, Rec-7-0040
  • Flavoxate Hydrochloride (200 mg)
CAS:
3717-88-2
MF:
C24H26ClNO4
MW:
427.92
EINECS:
223-066-4
Product Categories:
  • Aromatics
  • Heterocycles
  • ACTIVE PHARMACEUTICAL INGREDIENTS
  • Intermediates & Fine Chemicals
  • Pharmaceuticals
  • API
Mol File:
3717-88-2.mol
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Flavoxate hydrochloride Chemical Properties

Melting point:
232-234°C
storage temp. 
Inert atmosphere,Room Temperature
solubility 
H2O: ~6.6 mg/mL
form 
solid
color 
white
InChI
InChI=1S/C24H25NO4.ClH/c1-17-21(26)19-11-8-12-20(23(19)29-22(17)18-9-4-2-5-10-18)24(27)28-16-15-25-13-6-3-7-14-25;/h2,4-5,8-12H,3,6-7,13-16H2,1H3;1H
InChIKey
XOEVKNFZUQEERE-UHFFFAOYSA-N
SMILES
C12OC(=C(C)C(=O)C=1C=CC=C2C(=O)OCCN1CCCCC1)C1C=CC=CC=1.Cl
CAS DataBase Reference
3717-88-2(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22-36/37/38
Safety Statements 
26
WGK Germany 
3
RTECS 
DJ2450000
HS Code 
29349990
Toxicity
LD50 i.v. in rats: 27.4 mg/kg (Cazzulani)

MSDS

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Flavoxate hydrochloride Usage And Synthesis

Chemical Properties

Flavoxate hydrochloride is Crystalline Solid

Originator

Urispas,SKF,US,1971

Uses

Smooth muscle relaxant. Used as antispasmodic; in treatment of urinary incontinence.

Uses

Antispasmodic;Phosphodiesterase inhibitor

Definition

ChEBI: The hydrochloride salt of flavoxate.

Manufacturing Process

A mixture of 13.3 grams of anhydrous aluminum chloride and 100 ml of carbon disulfide is added to 19.4 grams of 2-propionyloxybenzoic acid (prepared from the reaction of propionyl chloride and 2-hydroxybenzoic acid). After an initial evolution of hydrogen chloride, the solvent is removed by distillation and the mixture is heated at 150° to 160°C for 4 hours. The cooled reaction mixture is treated with ice and hydrochloric acid and the product, 2- hydroxy-3-carboxypropiophenone, is obtained from the oily residue by distillation in vacuo.
A mixture of 1.9 grams of 2-hydroxy-3-carboxypropiophenone, 5.0 grams of sodium benzoate and 20.0 grams of benzoic anhydride is heated at 180° to 190°C for 6 hours. A solution of 15.0 grams of potassium hydroxide in 50 ml of ethanol and 20 ml of water is added and refluxed for 1 hour. The mixture is evaporated and the residue after addition of water yields 3-methylflavone-8- carboxylic acid.
To a suspension of 12.0 grams of 3-methylflavone-8-carboxylic acid in 200 ml of anhydrous benzene is added 10.0 grams of thionyl chloride. The mixture is refluxed for 2 hours during which the suspended solid goes into solution. The solvent is completely removed by distillation, the residue extracted with benzene and the extract evaporated to dryness. The product, 3- methylflavone-8-carboxylic acid chloride, is recrystallized from ligroin to give crystals melting at 155° to 156°C.
To 11.0 grams of 3-methylflavone-8-carboxylic acid chloride dissolved in 150 ml of anhydrous benzene is added at room temperature 4.8 grams of piperidinoethanol and the mixture refluxed for 2 to 3 hours. The separated solid is filtered, washed with benzene and dried. The product, piperidinoethyl 3-methylflavone-8-carboxylate hydrochloride is obtained as a colorless crystalline solid, MP 232° to 234°C, (from US Patent 2,921,070).

brand name

Urispas (Ortho-McNeil).

Therapeutic Function

Spasmolytic

Side effects

The following adverse reactions have been observed, but there are not enough data to support an estimate of their frequency.
Gastrointestinal: Nausea, vomiting, dry mouth.
CNS: Vertigo, headache, mental confusion, especially in the elderly, drowsiness, nervousness.
Hematologic: Leukopenia (one case which was reversible upon discontinuation of the drug).
Cardiovascular: Tachycardia and palpitation.
Allergic: Urticaria and other dermatoses, eosinophilia and hyperpyrexia.
Ophthalmic: Increased ocular tension, blurred vision, disturbance in eye accommodation.
Renal: Dysuria.

Veterinary Drugs and Treatments

Flovoxate may be considered for treating dogs with detrusor hyperspasticity (hyperactive bladder, urge incontinence).

Pharmacology

Flavoxate hydrochloride counteracts smooth muscle spasm of the urinary tract and exerts its effect directly on the muscle. In a single study of 11 normal male subjects, the time to onset of action was 55 minutes. The peak effect was observed at 112 minutes. 57% of the flavoxate hydrochloride was excreted in the urine within 24 hours.

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