Compound Q&A

What is Azithromycin EP Impurity A (CAS: 76801-85-9)?

Answer

Azithromycin EP Impurity A (Azathramycin, Desmethyl Azithromycin)
Azithromycin EP Impurity A, also known as Azathramycin or Desmethyl Azithromycin, is a chemical impurity found in Azithromycin, a macrolide antibiotic. It does not have a distinct chemical formula separate from its parent compound but is a degradation product. It is colorless to light yellow crystals or a white to off-white powder.

About

CAS No 76801-85-9
English Name Azithromycin EP Impurity A (Azathramycin, Desmethyl Azithromycin)
Molecular Formula C37H70N2O12
Molecular Weight 734.97 g/mol
SMILES CCC1C(C(C(NCC(CC(C(C(C(C(C(=O)O1)C)OC2CC(C(C(O2)C)O)(C)OC)C)OC3C(C(CC(O3)C)N(C)C)O)(C)O)C)C)O)(C)O
InChIKey HRKNNHYKWGYTEN-HOQMJRDDSA-N
Last Updated: 2025-09-03 20:19

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