USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $10.00-10.00 / Gram
USD $25.10-28.30 / Gram
USD $10.00-10.00 / Gram
USD $25.10-28.30 / Gram
USD $25.10-28.30 / Gram
USD $10.00-10.00 / Gram
USD $25.10-28.30 / Gram
appearance |
white or off white crystal powder,afraid of light |
|
identification |
ir :forward reaction |
|
|
uv:spectrum concordant with the working reference |
|
colour of solution |
clear and not darker in color than matching solution a,b and c |
|
specific optical rotation |
95°~105° |
|
loss on drying |
≤4.0% |
|
residue on ignition |
≤0.1% |
|
heavy metals |
≤20ppm |
|
content |
|
|
methanesulfonic acid |
12.5%~13.4% |
|
related substances |
|
|
bromocriptinine |
≤0.1% |
|
other individual |
≤0.1% |
|
total |
≤0.5% |
|
residual solvents |
|
|
toluene |
≤890ppm |
|
ethanol |
≤5000ppm |
|
acetone |
≤5000ppm |
|
diethyl ether |
≤5000ppm |
|
methanol |
≤3000ppm |
|
1,4-dioxan |
≤380ppm |
|
methylene -chloride |
≤600ppm |
|
assay |
|
|
recalculated on dried substance |
98.0%~102.0% |