Azithromycin Related Compounds & Impurities

Azithromycin is an azalide macrolide antibiotic with long tissue half-life enabling short treatment courses, one of the most widely prescribed antibiotics globally for respiratory, skin and STI infections.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Azithromycin reference standards, pharmacopeial and non-pharmacopeial Azithromycin impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Azithromycin-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Azithromycin Dihydrate
Azithromycin
Azithromycin EP Impurity A
Azithromycin EP Impurity B
Azithromycin EP Impurity C
Azithromycin EP Impurity D
Azithromycin EP Impurity E
Azithromycin EP Impurity F
Azithromycin EP Impurity G
Azithromycin EP Impurity H
Azithromycin EP Impurity I
Azithromycin EP Impurity J
Azithromycin EP Impurity L
Azithromycin EP Impurity M
Azithromycin EP Impurity N
Azithromycin EP Impurity O
N-Formyl-N-Dimethyl Impurity
Azithromycin EP Impurity S
Azithromycin N-Ethyl Analog
Atorvastatin Diketo Amide Impurity
Azithromycin EP Impurity K
Azithromycin EP Impurity Q
3-Hydroxy Azithromycinoic Acid Sodium
Azithromycin N-Ethyl
5,10,15,20-Tetraphenyl-21h,23h-porphine iron(iii) chloride
4``-keto-9a-azithromycin
Azithromycin Impurity 3 Sodium
N-Nitroso Azithromycin EP Impurity A
N-Nitroso Azithromycin EP Impurity I
3-Hydroxy Azithromycinoic Acid
N-Nitroso Azithromycin EP Impurity M
N-Desmethyl Azithromycin B
Azithromycin Impurity 4
Azaerythromycin C
Azithromycin Impurity 2
Azithromycin Impurity 1
Azithromycin Impurity 5

Metabolites

Descladinose 6-N-Desmethyl Azithromycin

Isotope Labelled Compounds

Azithromycin-13C D3
Azithromycin D3
Azithromycin-D5