Brand:tianxiang
Quantity:20
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1.Chemical name :tylosin,4A-O-de(2,6-dideoxy-3-C-methyl-alpha-L-ribo-hexopyranosyl)-20-deoxy-20-(3,5-dimethyl-1-piperidinyl)-(20(cis: trans))
2.Appearance: white or off white crystalline powder
3.Molecular formula: C46H80N2O13
4.Molecular weight: 869.15
5.Standard : USP230
6.Assay=85 %
7.water =5.0 %
8.cis isomer82.0-88.0%
9.trans isomer12.0-18.0
10.Individual impurities=3%
Total impurities=10%
