C55H103NO15
1018.4 g/mol
APIDanger
ERYTHROMYCIN STEARATE
CAS643-22-1EC211-396-1
Category
API
Compound Class
Ester
Primary Use
Pharmaceutical Raw Material
Erythromycin stearate is a salt form of the macrolide antibiotic erythromycin, used as an active pharmaceutical ingredient in the manufacturing of antibiotic drug products. The compound consists of the erythromycin base complexed with stearic acid, contributing to its formulation and stability characteristics.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
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Safety Reference
Danger
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
Customs Tariff Classification
The international HS code for ERYTHROMYCIN STEARATE (CAS 643-22-1) is 2941.50.
HS code (international, 6-digit)
2941.50
EU CN code (8-digit)
2941 50 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-14-ethyl-7,12,13-trihydroxy-4-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-3,5,7,9,11,13-hexamethyl-oxacyclotetradecane-2,10-dione;octadecanoic acid
InChIKey
YAVZHCFFUATPRK-YZPBMOCRSA-N
SMILES
CCCCCCCCCCCCCCCCCC(=O)O.CC[C@@H]1[C@@]([C@@H]([C@H](C(=O)[C@@H](C[C@@]([C@@H]([C@H]([C@@H]([C@H](C(=O)O1)C)O[C@H]2C[C@@]([C@H]([C@@H](O2)C)O)(C)OC)C)O[C@H]3[C@@H]([C@H](C[C@H](O3)C)N(C)C)O)(C)O)C)C)O)(C)O
Synonyms (36)
- Erythromycin stearate (JP18/USP)
- Erythromycin stearate [EP monograph]
- Abboticine
- Bristamycin
- Bristamycin (TN)
- Dowmycin E
- ERYTHROMYCIN STEARATE
- ERYTHROMYCIN STEARATE [MART.]
- ETHRIL 500
- Eratrex
- Erypar
- Erythrocin 500
- Erythrocin acne pack
- Erythrocin stearate
- Erythromycin stearate (salt)
- Erythromycin stearate CRS
- Erythromycini stearas
- Ethril
- Ethril 250
- Gallimycin
- Meberyt
- OE 7
- Pfizer-E
- Qidmycin
- Sk-erythromycin
- Wyamycin S
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