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Amoxicillin

IUPAC: (2S,5R,6R)-6-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

C16H19N3O5S Organic Compounds CAS 26787-78-0
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Quick Reference
Formula / NotationC16H19N3O5S
CAS Number26787-78-0
Molecular Weight365.4
Melting Point194 °C
Boiling Point743.2
SolubilitySoluble in water
AppearanceOff-white solid; [HSDB]
Also Known As(2S,5R,6R)-6-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid; 26787-78-0; Amoxycillin; Amoxicillin anhydrous; Amoxicilline; Amopenixin; p-Hydroxyampicillin; D-Amoxicillin; Amoxil; Amoxicilina
CategoryOrganic Compounds

What is Amoxicillin?

Amoxicillin is a penicillin in which the substituent at position 6 of the penam ring is a 2-amino-2-(4-hydroxyphenyl)acetamido group. It has a role as an antibacterial drug. It is a penicillin and a penicillin allergen. It is a conjugate acid of an amoxicillin(1-).

Formula & Notation

C16H19N3O5S

IUPAC Name: (2S,5R,6R)-6-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

Other Names / Synonyms: (2S,5R,6R)-6-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid; 26787-78-0; Amoxycillin; Amoxicillin anhydrous; Amoxicilline; Amopenixin; p-Hydroxyampicillin; D-Amoxicillin; Amoxil; Amoxicilina

Properties & Characteristics

Appearance: Off-white solid; [HSDB]. Molecular formula: C16H19N3O5S. Molecular weight: 365.4 g/mol. Boiling point: 743.2. Melting point: 194 °C. Solubility: Soluble in water. LogP: -2.

Physical Data

PropertyValue
Melting Point194 °C
Boiling Point743.2
Molecular Weight365.4
SolubilitySoluble in water
AppearanceOff-white solid; [HSDB]

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Amoxicillin
Formula C16H19N3O5S
CAS Number 26787-78-0
Molecular Weight 365.4
Synonyms (2S,5R,6R)-6-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid; 26787-78-0; Amoxycillin; Amoxicillin anhydrous; Amoxicilline; Amopenixin; p-Hydroxyampicillin; D-Amoxicillin; Amoxil; Amoxicilina

Frequently Asked Questions

Amoxicillin is a penicillin in which the substituent at position 6 of the penam ring is a 2-amino-2-(4-hydroxyphenyl)acetamido group. It has a role as an antibacterial drug. It is a penicillin and a penicillin allergen. It is a conjugate acid of an amoxicillin(1-).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.