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TOPIRAMATE - Reference: In house

S.No.

TEST

SPECIFICATION

01.

Description

White to off white crystalline powder 

02. Solubility 

Soluble in Methanol 

03 Melting Range

The two temperatures should fall between 122o C and 126o C

04.

Loss of Drying Not more than 0.50%  w/w
05. Specific rotation
on dried basis
Should be between -30o and -34o
06. Assay on dried basis by HPLC Should be between 98.0% w/w and 102.0% w/w 
07. Related substances
By GC
Maximum single impurity -Not more than 1.0%.
Total impurities-Not more than 2.0% 
08. Residual Solvents by GC  Methanol -- Not more than 1000ppm
Tolune -- Not more than 1000 ppm

 
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