USD $10.00-100.00 / Kilogram
USD $10.00-100.00 / Kilogram
USD $10.00-100.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $10.00-100.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $8.20-8.80 / Kilogram
USD $8.20-8.80 / Kilogram
captopril, cas 62571-86-2
purity: 99%
white crystalline powder
mf: c9h14no3s
usp standard
captopril, cas 62571-86-2
coa:
items
|
specification
|
appearance
|
white to off-white crystalline powder
|
identification
|
meets the requirements
|
melting point
|
104.0 ~ 110.0
|
specific rotation
|
-125°~ -134°
|
loss on drying
|
≤1.0%
|
residue on ignition
|
≤0.2%
|
heavy metals
|
≤0.003%
|
related substances
|
|
captopril disulfide
|
≤1.0%
|
single impurity
|
≤0.2%
|
total impurities
|
≤0.5%
|
organic volatile impurities
|
meets the requirements
|
assay (on dried basis)
|
97.5 ~ 102.0%
|
1:quality level: meet usp30
2:content: not less than 99.0%
3:mf:c9h15no3s
4:mw:217.29
5:cas no.: 62571-86-2
specifications:
test items |
the standard |
the result |
description |
white or off-white crystalline powder |
white crystalline powder |
identification |
ir spectrum accordance with that of crs |
complies |
specific rotation |
125°-134° |
129.3° |
loss on drying |
not more than 1.0% |
0.05% |
residue on ignition |
not more than 0.2% |
0.08% |
heavy metals |
not more than 0.003% |
less than0.003% |
related substances
|
captopril disutide: not more than 1.0% |
0.16% |
single impurity: not more than 0.2% |
not detectable |
|
total impurity: not more than 0.5% |
0.16% |
|
organic volatile impurities |
meets the requirements |
complies |
assay(anhydrous) |
97.5%-102% |
99.2% |
conclusion |
complies with usp30 |