CompoundList
Sign in
Antibiotics and anti-infectives

Cefoxitin

Also known as Cefoxitina, Cefoxitine, Cephoxitin

CAS 35607-66-0Formula C16H17N3O7S2Molar mass 427.46 g/molEC 252-641-2
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard 62 suppliers listed Drug substance
Get quotes Compare 62 suppliers
Cefoxitin chemical structure, C16H17N3O7S2, CAS 35607-66-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
35607-66-0
Formula
C16H17N3O7S2
Molar mass
427.46 g/mol
EC number
252-641-2
HS code
294190
Category
Antibiotics and anti-infectives

What is Cefoxitin?

Plain description, key identifiers and synonyms

Cefoxitin is a semisynthetic cephamycin antibiotic which, in addition to the methoxy group at the 7alpha position, has 2-thienylacetamido and carbamoyloxymethyl side-groups. It is resistant to beta-lactamase. It has a role as an antibacterial drug. It is a cephalosporin, a cephamycin, a semisynthetic derivative and a beta-lactam antibiotic allergen. It is a conjugate acid of a cefoxitin(1-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(6R,7S)-3-(carbamoyloxymethyl)-7-methoxy-8-oxo-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
CAS number
35607-66-0 CAS number cross-checkedOther or deprecated CAS: 73356-24-8
EC number
252-641-2
Molecular formula
C16H17N3O7S2
UNII
6OEV9DX57Y
MDL number
MFCD00072014
InChIKey
WZOZEZRFJCJXNZ-ZBFHGGJFSA-N
InChI
InChI=1S/C16H17N3O7S2/c1-25-16(18-10(20)5-9-3-2-4-27-9)13(23)19-11(12(21)22)8(6-26-15(17)24)7-28-14(16)19/h2-4,14H,5-7H2,1H3,(H2,17,24)(H,18,20)(H,21,22)/t14-,16+/m1/s1
Canonical SMILES
COC1(NC(=O)Cc2cccs2)C(=O)N2C(C(=O)O)=C(COC(N)=O)CSC21
Isomeric SMILES
CO[C@@]1([C@@H]2N(C1=O)C(=C(CS2)COC(=O)N)C(=O)O)NC(=O)CC3=CC=CS3

Synonyms

  • Cefoxitina
  • Cefoxitine
  • Cephoxitin
  • Cefoxitinum
  • Rephoxitin
  • Mefoxitin
  • Cenomycin
  • ceftoxitin
  • (6R,7S)-3-[(carbamoyloxy)methyl]-7-methoxy-8-oxo-7-[2-(thiophen-2-yl)acetamido]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • (6R,7S)-3-(carbamoyloxymethyl)-7-methoxy-8-oxo-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • (6R,7S)-3-((carbamoyloxy)methyl)-7-methoxy-8-oxo-7-(2-(thiophen-2-yl)acetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-(((aminocarbonyl)oxy)methyl)-7-methoxy-8-oxo-7-((2-thienylacetyl)amino)-, (6R,7S)-
  • MK 306
  • (6R,7S)-3-((carbamoyloxy)methyl)-7-methoxy-8-oxo-7-(2-(thiophen-2-yl)acetamido)-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
  • (6R,7S)-3-(carbamoyloxymethyl)-7-methoxy-8-oxo-7-((2-thiophen-2-ylacetyl)amino)-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
  • (6R,7S)-4-((carbamoyloxy)methyl)-7-methoxy-8-oxo-7-((thiophen-2-enyl)acetamido)-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
  • (6R,7S)-4-[(carbamoyloxy)methyl]-7-methoxy-8-oxo-7-[(thiophen-2-enyl)acetamido]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-[[(aminocarbonyl)oxy]methyl]-7-methoxy-8-oxo-7-[(2-thienylacetyl)amino]-, (6R,7S)-
  • Mefoxin
  • Cefoxitin S-Oxide
  • CFX
  • 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,3-[[(aminocarbonyl)oxy]methyl]-7-methoxy-8-oxo-7-[(2-thienylacetyl)amino]-, (6R-cis)-
  • (6R,7S)-3-(carbamoyloxymethyl)-7-methoxy-8-oxo-7-[[2-(2-thienyl)acetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • (6R,7S)-3-(Hydroxymethyl)-7-methoxy-8-oxo-7-(2-(2-thienyl)acetamido)-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid carbamate (ester)
  • Cefoxotin
Show all 29 synonyms
  • 4kow
  • (6R,7S)-3-(Hydroxymethyl)-7-methoxy-8-oxo-7-[2-(2-thienyl)acetamido]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid carbamate (ester)
  • Cefoxitin (Standard)
  • Cefoxitin (USAN/INN)

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
427.46 g/molcalc.
Exact mass
427.0508 Dacalc.
LogP (octanol/water)
0.1calc.
Topological polar surface area
148.3 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
8calc.
Rotatable bonds
7calc.
Heavy atoms
28calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.38calc.
Formal charge
0calc.
Stereocentres
2calc.
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(Cc1cccs1)NC1C(=O)N2C=CCSC12

O=C(Cc1cccs1)NC1C(=O)N2C=CCSC12

3 rings, 18 atoms.

34 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

Cefoxitin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 62 suppliers
30 of 30 offers
  • Ultra Care for Trading
    Egypt, Cairo ManufacturerUnclaimed profile
    CefoxitineGrade, purity and minimum order on request
    Price on request
    View
  • Euroasia Trans Continental
    IndiaUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • Geno Technology, Inc
    United StatesUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • Lead Pharm
    ChinaUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • Guangzhou PI PI BIOTECH INC
    China, GuangzhouUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • 001Chemical
    China, HangzhouUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • 10X Chem
    United States, San DiegoUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • A2B Chem LLC
    United States, San DiegoUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • Aa Blocks LLC
    United States, San DiegoUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View
  • Aaron Chemicals LLC.
    China, NanjingUnclaimed profile
    CefoxitinGrade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

62 suppliers in 15 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Cefoxitin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Anti-Bacterial Agents

Roles

  • antibacterial agent
  • antibacterial drug
  • antiinfective agent
  • antimicrobial agent
  • antimicrobial drug
  • pharmaceutical

Pharmacology

Cefoxitin is a Cephalosporin Antibacterial.

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 Cefoxitin is traded under.

HS 2941.90Indicative HS code

Antibiotics, other

World exports in 2024
$6.39B
+2.3% vs 2023, imports $6.97B
2019 to 2024
Top exporters
  1. China39.7%
  2. United States11.3%
  3. Switzerland * partner reported10.9%
Top importers
  1. Italy15.0%
  2. India * partner reported12.0%
  3. China8.7%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Cefoxitin?

Cefoxitin is a semisynthetic cephamycin antibiotic which, in addition to the methoxy group at the 7alpha position, has 2-thienylacetamido and carbamoyloxymethyl side-groups. It is resistant to beta-lactamase. It has a role as an antibacterial drug.

What is the CAS number of Cefoxitin?

The CAS registry number of Cefoxitin is 35607-66-0. Other or deprecated CAS numbers: 73356-24-8.

What is the molecular formula and weight of Cefoxitin?

The molecular formula of Cefoxitin is C16H17N3O7S2 and its molar mass is 427.46 g/mol.

What is Cefoxitin used for?

Known uses and roles of Cefoxitin include antibacterials and antibiotics in pharmaceuticals, antibacterial agent, antibacterial drug, antiinfective agent, antimicrobial agent and 3 more.

Is Cefoxitin hazardous?

Cefoxitin 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 Cefoxitin?

Cefoxitin is usually classified under HS code 294190 (Antibiotics, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cefoxitin?

CompoundList lists 62 suppliers of Cefoxitin in United States, China, Germany, United Kingdom and 11 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Cefoxitin in India?

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

What is the price of Cefoxitin?

Suppliers quote Cefoxitin 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 Cefoxitin

Get quotes for Cefoxitin

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Cefoxitin
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Cefoxitin with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/cefoxitin-35607-66-0" title="Cefoxitin structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Antibiotics and anti-infectives or HS code 294190

62 suppliers
Free quotes, contact stays private
Get quotes