USD $1.00-10.00 / Kilogram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
item |
specification |
test result |
description |
orange to yellow crystalline powder |
correspond |
identification |
the ir absorption spectrum should correspond with reference spectrum |
correspond with reference spectrum |
|
should exhibits maximum absorption at 354nm |
exhibits maximum absorption at 354nm |
loss on drying |
not more than 0.5% |
0.12% |
residue on ignition |
not more than 0.1% |
0.03% |
heavy metals |
not more than 0.002% |
less than 0.002% |
tretinoin |
not more than 1.0% |
0.1% |
assay |
98.0%~102.0 %( calculated on the dried basis) |
100.0% |
conclusion |
it complies with all the requirements of usp 35 |