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Todralazine hydrochloride

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Todralazine hydrochloride Basic information

Product Name:
Todralazine hydrochloride
Synonyms:
  • apirachol
  • binazin
  • binazine
  • carbazicacid,3-(1-phthalazinyl)-,ethylester,monohydrochloride
  • hydrazinecarboxylicacid,2-(1-phthalazinyl)-,ethylester,monohydrochloride
  • TODRALAZINE HYDROCHLORIDE
  • 2-(1-PHTHALAZINYL)-HYDRAZINECARBOXYLIC ACID ETHYL ESTER HYDROCHLORIDE
  • ethyl 3-(phthalazin-1-yl)carbazate hydrochloride
CAS:
3778-76-5
MF:
C11H13ClN4O2
MW:
268.7
Mol File:
3778-76-5.mol
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Todralazine hydrochloride Chemical Properties

storage temp. 
Store at -20°C
solubility 
DMF: 5 mg/ml; DMSO: 10 mg/ml; DMSO:PBS (pH 7.2) (1:1): 0.5 mg/ml; Ethanol: 1 mg/ml; PBS (pH 7.2): slightly
form 
A crystalline solid
color 
White to off-white
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Safety Information

Hazard Codes 
Xn
Risk Statements 
20/21/22
Safety Statements 
36
WGK Germany 
3
RTECS 
FE2778600
Toxicity
LD50 i.p. in mice: 500 mg/kg (Parravincini)

MSDS

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Todralazine hydrochloride Usage And Synthesis

Originator

Prorazin,Teisan

Uses

Todralazine Hydrochloride is an antihypertensive agent for research use. Vasodilator.

Uses

Antihypertensor

Manufacturing Process

A suspension of 13 g of hydrazinophthalazine in 500 ml of anhydrous ethanol is cooled, under agitation to a temperature of -10°C. To the suspension is added dropwise within 30 min a solution of 4.5 g of ethyl chlorocarbonate in 150 ml of anhydrous ethanol and the reaction mass is agitated for about 2 hours, maintaining a temperature of -10°C. The temperature is then raised to about 20°C and stirring is continued for 2 hours, whereupon heating is applied and boiling is maintained for 15 min. After cooling, the separated 1- hydrazinophthalazine hydrochloride is filtered and washed with anhydrous ethanol.
The filtrate is evaporated to a dry state under decreased pressure at a temperature of below 50°C. The residue in a quantity of 8.5 g is dissolved in a boiling solution of 3 ml of concentrated hydrochloric acid in 15 ml of water, and after adding 5 ml of 90%-ethanol the solution is cooled to a temperature of below 0°C.
The separated 1-carboethoxyhydrazinophthalazine hydrochloride is filtered and washed with anhydrous ethanol. 11.5 g of a raw product are obtained which for the purpose of purification are dissolved in 15 ml of boiling water with an addition of 10 ml of 96%-ethanol and after cooling to below 0°C, the pure 1- carboethoxyhydrazinophthalazine hydrochloride is filtered. 9.8 g of the are obtained.

Therapeutic Function

Antihypertensive

Todralazine hydrochlorideSupplier

Syntechem Co.,Ltd
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Spectrum Chemical Manufacturing Corp.
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021-021-021-67601398-809-809-809 15221380277
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BOC Sciences
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1-631-485-4226; 16314854226
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Shanghai TaoSu Biochemical Technology Co., Ltd.
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021-33632979
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Shanghai EFE Biological Technology Co., Ltd.
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021-65675885 18964387627
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