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PZ0007 Sigma-Aldrich

Azithromycin dihydrate

≥98% (HPLC)

Synonym: N-Methyl-11-aza-10-deoxo-10-dihydroerythromycin A, CP-62993

  • CAS Number 117772-70-0

  • Empirical Formula (Hill Notation) C38H72N2O12 · 2H2O

  • Molecular Weight 785.02

  •  MDL number MFCD01862248

  •  PubChem Substance ID 329823676

  •  NACRES NA.77



Related Categories AN-AZ, Approved Therapeutics/Drug Candidates, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology,
Quality Level   100
assay   ≥98% (HPLC)
form   powder
mfr. no.   Pfizer®
storage condition   protect from light
color   off-white
solubility   DMSO: >20 mg/mL
originator   Pfizer
storage temp.   room temp
SMILES string   O.O.CC[C@H]1OC(=O)[C@H](C)[C@@H](O[C@H]2C[C@@](C)(OC)[C@@H](O)[C@H](C)O2)[C@H](C)[C@@H](O[C@@H]3O[C@H](C)C[C@@H]([C@H]3O)N(C)C)[C@](C)(O)C[C@@H](C)CN(C)[C@H](C)[C@@H](O)[C@]1(C)O
InChI   1S/C38H72N2O12.2H2O/c1-15-27-38(10,46)31(42)24(6)40(13)19-20(2)17-36(8,45)33(52-35-29(41)26(39(11)12)16-21(3)48-35)22(4)30(23(5)34(44)50-27)51-28-18-37(9,47-14)32(43)25(7)49-28;;/h20-33,35,41-43,45-46H,15-19H2,1-14H3;2*1H2/t20-,21-,22+,23-,24-,25+,26+,27-,28+,29-,30+,31-,32+,33-,35+,36-,37-,38-;;/m1../s1



Azithromycin dihydrate has been used:
• in blocking buffer (5% bovine serum albumin) for indirect immunofluorescence
• in treating the U87 cells for cell-viability assay and flow cytometry analysis to study the Zika virus infection in glial cells
• in antibiotic co-treatment experiments, to compare its antibacterial activity with PYRRO-C3D against Streptococcus pneumoniae biofilms


5, 25 mg in glass bottle

Biochem/physiol Actions

Azithromycin dihydrate is a macrolide antibiotic, azalide subclass. It binds to the 50S subunit of the 70S bacterial ribosomes and inhibits RNA-dependent protein synthesis in bacterial cells. Azithromycin also has anti-immunomodulatory/anti-inflammatory properties, which make it useful in treating cystic fibrosis.

Azithromycin is a non-β-lactam antibody, effective against infections associated with respiratory tract, skin, tissues and genital chlamydia. It also acts against Plasmodium falciparum and P. vivax, which are multidrug resistance species that transmit malaria. Azithromycin targets the ribosome and prevents protein synthesis. It is soluble in lipids and metabolizes in liver by undergoing demethylation.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®Pfizer), a collection of 90 Pfizer-developed drugs and research tools. Click here to learn more.

Other Notes

This compound was developed by Pfizer for Immunology research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds, visit sigma.com/bsm-pfizer.

To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Legal Information

Sold for research purposes under agreement from Pfizer Inc.

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Pfizer is a registered trademark of Pfizer, Inc.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


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