Erythromycin Impurity – B
(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(methylamino)-β-D-xylohexopyranosyl]oxy]-1-oxacyclotetradecane-2,10-dione (3″-N-demethylerythromycin A)
| Chemical Name | (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(methylamino)-β-D-xylohexopyranosyl]oxy]-1-oxacyclotetradecane-2,10-dione (3″-N-demethylerythromycin A) |
|---|---|
| CAS No. | 992-62-1 |
| Molecular Formula | C36H65NO13 |
| Molecular Weight | 719.91 |
| Chemical Structure |
![(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(methylamino)-β-D-xylohexopyranosyl]oxy]-1-oxacyclotetradecane-2,10-dione (3″-N-demethylerythromycin A) Structure](https://bhavanishlifesciences.com/wp-content/uploads/2026/09/erythromycin-impurity-b-structure.png) |
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Erythromycin Impurity – B
Erythromycin Impurity – B is a recognized impurity / related substance associated with Erythromycin as per EP pharmacopoeial requirements. It has the molecular formula C36H65NO13 and a molecular weight of 719.91 g/mol. Laboratories use this reference standard for impurity identification, method validation, and batch release testing related to Erythromycin. Offered as a high-purity analytical reference standard for use in HPLC, LC-MS/MS, and other chromatographic techniques.
Erythromycin impurities reference standards are useful in pharmaceutical research. They are useful in product development, ANDA and DMF filing, Quality control (QC), method validation, and stability studies. It is also useful in the identification of unknown impurities and the assessment of genotoxic potential.
We are the BHAVANISH LIFE SCIENCES specializes in manufacturing and supplying of Erythromycin impurities that meet specific pharmacopeial standards (USP/EP/BP/IP) as well as process-related impurities.
This related products or Impurities are thoroughly characterized. Supplied with detailed COA & analytical data Like NMR / MASS / HPLC / GC / IR / TGA / Potency / Structure elucidation data (SER Report) meeting regulatory compliance.
BHAVANISH LIFE SCIENCES provides this compound for research and development and Analytical testing use only, and is not meant for human consumption. With product information including CAS number, molecular formula, molecular weight details.
BHAVANISH LIFE SCIENCES in providing high-quality impurity standards to support pharmaceutical companies in maintaining drug safety and efficacy.
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