USD $1.00-10.00 / Kilogram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $5.00-10.00 / Gram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
doxycycline hyclate
this complies with the bp2002 specification
characteristics:yellow crystal powder
absorbance:300-330
product name: doxycycline hyclate expiry date:4 years
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test |
standards |
results |
|
characteristics |
a yellow crystalline powder hygroscopic |
conforms |
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identification |
tlc |
positive |
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sulphuric acid yellow color reaction |
positive |
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chloride’s reaction |
positive |
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acidity |
ph2.0~3.0 |
2.38 |
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absorbance |
300~330 |
301 |
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specific optical rotation |
-105°~ -120° |
-107.5° |
|
heavy metals |
not more than 50ppm |
<20ppm |
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light-absorbing impurities |
not more than 0.07 |
0.011 |
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related substances |
methacycline |
not more than 2.0% |
0.32% |
6epidoxycycline |
not more than 2.0% |
0.42% |
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other impurities |
not more than 0.5% |
0.42% |
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ethanol |
4.3%~6.0% |
4.99% |
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sulphated ash |
not more than 0.4% |
0.12% |
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water |
1.4%~2.8% |
1.98% |
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assay (anhydrous and ethanol free) |
95.0%~102.0% |
98.18% |
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conclusion: the product fulfils bp2002 specification |