Temozolomide CAS 85622-93-1 CAS NO.85622-93-1

escription

a white to off wihte cystalline powder

;odorless;tasted bitter

a white to off wihte cystalline powder;

odorless;

tasted bitter

identification

a.ir

conform to reference standard

conforms

b.chemical property

dissolve 0.1g the sample with 10 ml

water,add 5ml dinitro-phenyl-hydrazine,should have marron precipitate

positive

c.hplc

hplc rt of sample is the same as working

standard

conforms

loss on drying

≤1.0%

0.45%

residual on ignition

≤0.10%

0.06%

heavy metals

≤0.002%

complies

impurity by hplc

any impurity(max)

total impurities

≤0.1%

≤0.3%

≤0.04%

≤0.09%

residual solvents

ethyl acetate

acetone

dmso

≤0.5%

≤0.5%

≤0.5%

complies

complies

complies

assay(hplc)

98.50~102.00%

99.35%