USD $1.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
usp standard
norethisterone
characters |
white or almost white crystalline powder |
identification
|
tlc uv spectrum ir spectrum |
melting point |
202 ~ 208℃ |
loss on drying |
≤0.5% |
specific rotation |
–30~ –38° |
limit of ethinyl group |
8.18%~8.43% |
related substances
|
total impuritics≤1.5% only one impurity≤0.5% |
solution appearance |
clear,and free from undissolved solid |
assay
|
97.0 ~ 102.0% |