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Antibiotics and anti-infectives

Amoxicillin

Also known as Amoxycillin, Amoxicillin anhydrous, Amoxicilline

CAS 26787-78-0Formula C16H19N3O5SMolar mass 365.41 g/molEC 248-003-8
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard 174 suppliers listed Drug substance
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Amoxicillin chemical structure, C16H19N3O5S, CAS 26787-78-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
26787-78-0
Formula
C16H19N3O5S
Appearance
Crystals from water
Solubility
Soluble in water
HS code
294110
Category
Antibiotics and anti-infectives
Illustrative photo, closed white HDPE bottles and amber jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Amoxicillin?

Plain description, key identifiers and synonyms

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-).

Amoxicillin is an antibiotic useful for the treatment of a number of bacterial infections.

Identifiers

Registry numbers, names and line notations, tap to copy

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
CAS number
26787-78-0 CAS number cross-checked
EC number
248-003-8
Molecular formula
C16H19N3O5S
UNII
9EM05410Q9
MDL number
MFCD00056860
InChIKey
LSQZJLSUYDQPKJ-NJBDSQKTSA-N
InChI
InChI=1S/C16H19N3O5S/c1-16(2)11(15(23)24)19-13(22)10(14(19)25-16)18-12(21)9(17)7-3-5-8(20)6-4-7/h3-6,9-11,14,20H,17H2,1-2H3,(H,18,21)(H,23,24)/t9-,10-,11+,14-/m1/s1
Canonical SMILES
CC1(C)SC2C(NC(=O)C(N)c3ccc(O)cc3)C(=O)N2C1C(=O)O
Isomeric SMILES
CC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)[C@@H](C3=CC=C(C=C3)O)N)C(=O)O)C

Synonyms

  • Amoxycillin
  • Amoxicillin anhydrous
  • Amoxicilline
  • Amopenixin
  • p-Hydroxyampicillin
  • D-Amoxicillin
  • Amoxil
  • Amoxicilina
  • Amolin
  • Moxal
  • Trimox
  • Amoxicillinum
  • Amoxiden
  • Amoxivet
  • Anemolin
  • Bristamox
  • Delacillin
  • Flemoxin
  • Hiconcil
  • Histocillin
  • Imacillin
  • Unicillin
  • Vetramox
  • Amoclen
  • Aspenil
Show all 39 synonyms
  • Cemoxin
  • Efpenix
  • Piramox
  • Amoxi
  • Sumox
  • Robamox
  • Amoxi-Mast
  • Sawamox PM
  • Metafarma capsules
  • Metifarma capsules
  • Moxatag
  • Ospamox
  • Ibiamox
  • Moxacin

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Crystals from waterexp.
Odour
Penicillin-type odorexp.
Taste
Bitter tastingexp.
Solubility
Soluble in waterexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
365.41 g/molcalc.
Exact mass
365.1045 Dacalc.
LogP (octanol/water)
0.02calc.
Topological polar surface area
133 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
4calc.
Heavy atoms
25calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.44calc.
Formal charge
0calc.
Stereocentres
4calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C(Cc1ccccc1)NC1C(=O)N2CCSC12

O=C(Cc1ccccc1)NC1C(=O)N2CCSC12

3 rings, 18 atoms.

177 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H317May cause an allergic skin reaction.
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
Precautionary statements (15)
  • P233Keep container tightly closed.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P342 + P316If experiencing respiratory symptoms: Get emergency medical help immediately.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403Store in a well-ventilated place.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Amoxicillin suppliers

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All 174 suppliers
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Where suppliers are based

174 suppliers in 33 countries

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Amoxicillin price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Veterinary medication:.

Anti-Bacterial Agents.

Use classes: Pharmaceuticals, Animal Drugs.

Pharmacological actions

  • Anti-Bacterial Agents

Roles

  • analgesic
  • anti-asthmatic agent
  • anti-inflammatory agent
  • anti-obesity agent
  • anti-ulcer drug
  • antibacterial agent
  • antibacterial drug
  • antiinfective agent
  • antimalarial
  • antimicrobial agent
  • antimicrobial drug
  • antimycobacterial drug
  • antineoplastic agent
  • antiparasitic agent
  • antiplasmodial drug
  • antiprotozoal drug
  • antitubercular agent
  • antiviral agent
  • pharmaceutical

Functional uses

  • Pharmaceutical

Pharmacology

Amoxicillin anhydrous is a Penicillin-class Antibacterial.

How it is made

By acylation of 6-aminopenicillanic acid with D-(-)-2-(p-hydroxyphenyl)glycine.

Preparation: Nayler, Smith, United Kingdom patent 978178 (1964 to Beecham), eidem, United States of America patent 3192198 (1965), Long, Nayler, Germany patent 1942693 and United Kingdom patent 1241844 (1070 and 1971 to Beecham).

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Amoxicillin is traded under.

HS 2941.10Indicative HS code

Penicillins and their derivatives with a penicillanic acid structure, salts thereof

World exports in 2024
$1.66B
−2.5% vs 2023, imports $1.63B
2019 to 2024
Top exporters
  1. China56.8%
  2. Spain13.1%
  3. India * partner reported7.7%
Top importers
  1. India * partner reported16.4%
  2. Austria9.3%
  3. Brazil5.4%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Amoxicillin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Amoxicillin, based on the data on this page

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-).

What is the CAS number of Amoxicillin?

The CAS registry number of Amoxicillin is 26787-78-0.

What is the molecular formula and weight of Amoxicillin?

The molecular formula of Amoxicillin is C16H19N3O5S and its molar mass is 365.41 g/mol.

What is Amoxicillin used for?

Veterinary medication:. Anti-Bacterial Agents. Use classes: Pharmaceuticals, Animal Drugs.

Is Amoxicillin hazardous?

Amoxicillin carries the GHS signal word "Danger". Main hazards: may cause an allergic skin reaction, may cause allergy or asthma symptoms or breathing difficulties if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Amoxicillin?

Amoxicillin is usually classified under HS code 294110 (Penicillins and their derivatives with a penicillanic acid structure, salts thereof). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Amoxicillin?

CompoundList lists 174 suppliers of Amoxicillin in India, China, United States, Bangladesh and 29 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Amoxicillin in India?

44 suppliers in India list Amoxicillin on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Amoxicillin?

Suppliers quote Amoxicillin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Amoxicillin

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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