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Impurities and reference standards

Cefepime, E-

Also known as E-Cefepime, Anti-cefepime, (6R,7R)-7-(((2E)-(2-Aminothiazol-4-yl)(methoxyimino)acetyl)amino)-3-((1-methylpyrrolidinio)methyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylate

CAS 149261-27-8Formula C19H24N6O5S2Molar mass 480.57 g/mol
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Cefepime, E- chemical structure, C19H24N6O5S2, CAS 149261-27-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
149261-27-8
Formula
C19H24N6O5S2
Molar mass
480.57 g/mol
HS code
294190
Category
Impurities and reference standards

What is Cefepime, E-?

Plain description, key identifiers and synonyms

Cefepime, E- is a chemical substance with the molecular formula C19H24N6O5S2 and a molar mass of 480.57 g/mol. Its CAS registry number is 149261-27-8. The IUPAC name is (6R,7R)-7-[[(2E)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-[(1-methylpyrrolidin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(6R,7R)-7-[[(2E)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-[(1-methylpyrrolidin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
CAS number
149261-27-8 CAS number cross-checkedOther or deprecated CAS: 88040-23-7, 97164-57-3
Molecular formula
C19H24N6O5S2
UNII
Z0114Q3738
InChIKey
HVFLCNVBZFFHBT-FKULVZFESA-N
InChI
InChI=1S/C19H24N6O5S2/c1-25(5-3-4-6-25)7-10-8-31-17-13(16(27)24(17)14(10)18(28)29)22-15(26)12(23-30-2)11-9-32-19(20)21-11/h9,13,17H,3-8H2,1-2H3,(H3-,20,21,22,26,28,29)/b23-12+/t13-,17-/m1/s1
Canonical SMILES
CON=C(C(=O)NC1C(=O)N2C(C(=O)[O-])=C(C[N+]3(C)CCCC3)CSC12)c1csc(N)n1
Isomeric SMILES
C[N+]1(CCCC1)CC2=C(N3[C@@H]([C@@H](C3=O)NC(=O)/C(=N/OC)/C4=CSC(=N4)N)SC2)C(=O)[O-]

Synonyms

  • E-Cefepime
  • Anti-cefepime
  • (6R,7R)-7-(((2E)-(2-Aminothiazol-4-yl)(methoxyimino)acetyl)amino)-3-((1-methylpyrrolidinio)methyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylate
  • Cefepime EP Impurity A
  • Anticefepime (>90%)
  • Cefepime impurity A
  • Cefepime specified impurity A
  • Cefepime, BMY-2
  • Cefepime Impurity C65
  • Cefepime dihydrochloride monohydrate impurity A

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
480.57 g/molcalc.
Exact mass
480.125 Dacalc.
LogP (octanol/water)
-1.28calc.
Topological polar surface area
150 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
10calc.
Rotatable bonds
7calc.
Heavy atoms
32calc.
Rings
4calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.53calc.
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, N=C(C(=O)NC1C(=O)N2C=C(CN3CCCC3)CSC12)c1cscn1

N=C(C(=O)NC1C(=O)N2C=C(CN3CCCC3)CSC12)c1cscn1

4 rings, 25 atoms.

13 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Cefepime, E- suppliers

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Cefepime, E- price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cefepime, E- 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 Cefepime, E- is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cefepime, E-, based on the data on this page

What is Cefepime, E-?

Cefepime, E- is a chemical substance with the molecular formula C19H24N6O5S2 and a molar mass of 480.57 g/mol. Its CAS registry number is 149261-27-8.

What is the CAS number of Cefepime, E-?

The CAS registry number of Cefepime, E- is 149261-27-8. Other or deprecated CAS numbers: 88040-23-7, 97164-57-3.

What is the molecular formula and weight of Cefepime, E-?

The molecular formula of Cefepime, E- is C19H24N6O5S2 and its molar mass is 480.57 g/mol.

Is Cefepime, E- hazardous?

No GHS hazard classification for Cefepime, E- is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Cefepime, E-?

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

Where can I buy Cefepime, E-?

Post a free request on CompoundList and suppliers of Cefepime, E- will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Cefepime, E-?

Suppliers quote Cefepime, E- 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 Cefepime, E-

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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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