USD $100.00-100.00 / Kilogram
USD $10.00-90.00 / Kilogram
USD $8.80-8.80 / Gram
USD $10.00-90.00 / Kilogram
USD $2.00-2.00 / Gram
USD $1.00-10.00 / Kilogram
USD $2.00-2.00 / Gram
USD $2.00-2.00 / Gram
cp2010 standard have gmp
appearance |
white to yellowish crystal or crystalline powder,odorless |
melting point |
117-119.5℃ |
solubility |
easy soluble in methanol or ethanol, almost insoluble in water |
identification |
hplc:max absorption at254+2nm,280+2nm,287+2nm ir absorption: the ir absorption spectrum obtained with the test solution is consistent with that obtained with its reference solution |
clarity and color of ethanol solution |
conforms |
heavy metals |
≤10ppm |
related substance |
1)any single impurity peak area is not more than 1/2 times of the principal peak in the reference solution. 2)total peak areas of all impurities are not more than that of the principal peak in the reference solution(1.0%) |
water |
≤0.5% |
residue on ignition |
≤0.1% |
microbial limit |
bacteria nmt1000cfu/g mould&yeast nmt100cfu/g e.coli n,d |
assay |
≥98.5% |