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Technical Data Sheet Spiramycin

Compound Information
Product Name: Spiramycin
CAS No.: 8025-81-8
Molecular Formula: C43H74N2O14
Molecular Weight: 843.05
Revision Date: 2026-04-15
Analytical Information
Tests Specifications
Appearance Off-White Powder
Assay 4565 IU / mg
Composition Spiramycin I : 88.8 %; Spiramycin II : 0.6 %; Spiramycin III : 2.3 %; Total Spiramycin I, II, III : 92 %
Melting Point 126-128 °C
pH 9.7 units at room temperature
Absorbance maxima at 232 to 234 nm
Specific Rotation - 82.2 °
Heavy Metals ≤ 20 ppm
Loss on Drying 1.8 %
Sulfated Ash 0.06 %
MS Pass test
1H NMR Pass test
Disclaimer: This information relates only to the specific material designated and may not be valid for such material used in combination with anyother materials or in any other process. Such information is to be the best of the company's knowledge and believed accurate and reliable as of thedate indicated. However, no representation, warranty or guarantee of any kind, express or implied, is made as to its accuracy, reliability orcompleteness and we assume no responsibility for any loss, damage or expense, direct or consequential, arising out of use. It is the user'sresponsibility to satisfy himself as to the suitableness & completeness of such information for his own particular use.
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