USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $3.00-10.00 / Kilogram
USD $3.00-10.00 / Kilogram
USD $3.00-10.00 / Kilogram
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
cp 2010 standard we have gmp
qualifications
pq certification
world health organization
appearance |
white crystal or crystalline powder,odorless,taste slightly bitter |
|
solubility |
very soluble in chloroform or acetone ; freely soluble in ethanol or ethyl acetate, practically insoluble in water conforms |
|
melting point |
86~90℃ |
|
specific optical rotation |
+168°~+173° |
|
identification |
|
|
color reaction |
a pale yellow color is produced |
|
color reaction |
a peach blow color is produced |
|
hplc |
the retention time of main peak of the test and standard are concordant |
|
ir
|
infrared absorption spectrum of test and standard (or infrared reference spectra no. 519)are concordant |
|
tests |
|
|
chlorides |
not more pronounced (0.01%) |
|
related substances (hplc) |
any single impurity≤0.5% any impurity between 0.25% and 0.5%≤1 total impurities ≤1% |
|
residual solvent (gc) |
methanol ≤0.3% dichloromethane ≤0.06% |
|
loss on drying |
≤ 0.5% |
|
residual on ignition |
≤ 0.1% |
|
assay (on dried basis) |
98.0% ~102.0%(hplc) |