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Tizanidine HCL - USP
||Off White to light yellow crystalline powder
||Soluble in methanol and water
||It responds to the following test A and B
|A, By IR: The infrared absorption spectrum of the test substance exhibits maximum at the same wave-length as that of a similar preparation of Tizanidine Hydrochloride WRS.
|B,The retention time of major peak in the chromatograph of the Assay preparation correspond to that in the chromatograph of the Standard preparation as obtained in the Assay. C, it responds to the test for Chloride
||PH of 1%w/v solution is 4.3 to 5.3.
|Loss on drying
||Not more than 0.5%
|Residue on Ignition
||Not more than 0.1%
||Not more than 0.002%
|Related compounds by HPLC
- Individual known impurity :
- Tizanidine Related compound A : NMT 0.1%
- Tizanidine Related compound B : NMT 0.1%
- Tizanidine Related compound C : NMT 0.1%
- Individual unknown Impurity : NMT 0.1%
- Total Impurity : NMT 0.3%
||Not less than 98.0 per cent and not more than 102.0 per cent w/w of C9H8CIN5S. HCL calculated on dried basis.