USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
item |
requirements |
test results |
appearance |
white or almost white crystalline powder |
complies |
identification |
infrared spectrum corresponds to that of the standard preparation |
complies |
the retention time of the major peak in the chromatogram corresponds to that in the chromatogram of standard preparation |
complies |
|
related substances(hplc) |
impurity b(7z)-calcipotriol):≤0.5% |
nd |
impurity c(5e)-calcipotriol)≤1.0% |
0.26% |
|
impurity d(24-epi-calcipotriol)≤1.0% |
0.70% |
|
any other impurity: ≤0.1% |
complies |
|
total impurities:≤2.5% |
1.1% |
|
purity |
≥ 97.5% |
98.9% |
loss on drying |
≤1.0% |
0.41% |
residue on ignition |
≤0.10% |
0.04% |
assay (dried substance) |
95.5%-102.0% |
99.6% |
conclusion |
complies with in house standard/ep6.0 |