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Merck

1046056

USP

Azithromycin

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Azithromycin dihydrate, 1-Oxa-6-azacyclopentadecan-15-one, 13-[(2,6-dideoxy-3-C-methyl-3-O-methyl-alpha-L-ribo-hexopyranosyl)oxy]-2-ethyl-3,4,10- trihydroxy-3,5,6,8,10,12,14-heptamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylohexopyranosyl]oxy]-, [2R-(2R, 3S, 4R, 5R, 8R, 10R, 11R, 12S, 13S, 14R)]- dihydrate, N-Methyl-11-aza-10-deoxo-10-dihydroerythromycin A, CP-62993

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About This Item

Empirical Formula (Hill Notation):
C38H72N2O12 · 2H2O
CAS Number:
117772-70-0
Molecular Weight:
785.02
NACRES:
NA.24
PubChem Substance ID:
329749090
UNSPSC Code:
41116107
MDL number:
MFCD01862248

Product Name

Azithromycin, United States Pharmacopeia (USP) Reference Standard

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

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 key

SRMPHJKQVUDLQE-KUJJYQHYSA-N

grade

pharmaceutical primary standard

agency

USP

API family

azithromycin

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

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Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Application

Azithromycin USP reference standard for use in specified quality tests and assays.

Also used to prepare standard, standard stock solutions for the assay, identification, performance, and impurity analysis according to the given below monographs of United States Pharmacopeia (USP):
  • Azithromycin for Oral Suspension
  • Azithromycin Capsules
  • Azithromycin for Injection

Biochem/physiol Actions

Azithromycin dihydrate is a macrolide antibiotic with anti-immunomodulatory/anti-inflammatory properties.
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.

General description

Azithromycin is a subclass of macrolides consisting of 15-membered macrocyclic lactone ring to which sugar moieties are linked.

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.
USP issued SDS can be found here

wgk

WGK 3

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

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Azithromycin for Oral Suspension
United States Pharmacopeia, 44(5) (2022)
Azithromycin for Injection
United States Pharmacopeia, 44(2), 451-451 (2020)
Azithromycin Capsules
United States Pharmacopeia, 27(6), 450-450 (2013)
Aspects of degradation kinetics of azithromycin in aqueous solution.
Zhang, Yu, et al.
Chromatographia, 70.1-2, 67-73 (2009)
Development and validation of a micellar liquid chromatographic method with UV detection for determination of azithromycin in tablets and capsules.
Kulikov, A. U., and A. G. Verushkin.
Chromatographia, 60.1-2, 33-38 (2004)
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