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Impurities and reference standards

Cefepime dioxime

Also known as Cefepime EP Impurity B, Cefepime Impurity 40, Cefepime impurity b

CAS 2923899-40-3Formula C25H29N9O7S3Molar mass 663.76 g/mol
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Cefepime dioxime chemical structure, C25H29N9O7S3, CAS 2923899-40-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2923899-40-3
Formula
C25H29N9O7S3
Molar mass
663.76 g/mol
HS code
294190
Category
Impurities and reference standards

What is Cefepime dioxime?

Plain description, key identifiers and synonyms

Cefepime dioxime is a chemical substance with the molecular formula C25H29N9O7S3 and a molar mass of 663.76 g/mol. Its CAS registry number is 2923899-40-3. The IUPAC name is (6R,7R)-7-[[(2Z)-2-[2-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]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-[[(2Z)-2-[2-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]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
2923899-40-3
Molecular formula
C25H29N9O7S3
UNII
8V40327H44
InChIKey
KMTSWFKAQYRTIV-LANNWKMSSA-N
InChI
InChI=1S/C25H29N9O7S3/c1-34(6-4-5-7-34)8-12-9-42-22-17(21(37)33(22)18(12)23(38)39)29-19(35)16(32-41-3)14-11-44-25(28-14)30-20(36)15(31-40-2)13-10-43-24(26)27-13/h10-11,17,22H,4-9H2,1-3H3,(H4-,26,27,28,29,30,35,36,38,39)/b31-15-,32-16-/t17-,22-/m1/s1
Canonical SMILES
CON=C(C(=O)Nc1nc(C(=NOC)C(=O)NC2C(=O)N3C(C(=O)[O-])=C(C[N+]4(C)CCCC4)CSC23)cs1)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)NC(=O)/C(=N\OC)/C5=CSC(=N5)N)SC2)C(=O)[O-]

Synonyms

  • Cefepime EP Impurity B
  • Cefepime Impurity 40
  • Cefepime impurity b
  • Cefepime dihydrochloride monohydrate impurity b

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
663.76 g/molcalc.
Exact mass
663.1352 Dacalc.
LogP (octanol/water)
-0.83calc.
Topological polar surface area
213.6 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
15calc.
Rotatable bonds
11calc.
Heavy atoms
44calc.
Rings
5calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.44calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Fails (2 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)Nc1nc(C(=N)C(=O)NC2C(=O)N3C=C(CN4CCCC4)CSC23)cs1)c1cscn1

N=C(C(=O)Nc1nc(C(=N)C(=O)NC2C(=O)N3C=C(CN4CCCC4)CSC23)cs1)c1cscn1

5 rings, 35 atoms.

No other chemical in our database has 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 dioxime suppliers

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Cefepime dioxime 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 dioxime 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 dioxime is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cefepime dioxime, based on the data on this page

What is Cefepime dioxime?

Cefepime dioxime is a chemical substance with the molecular formula C25H29N9O7S3 and a molar mass of 663.76 g/mol. Its CAS registry number is 2923899-40-3.

What is the CAS number of Cefepime dioxime?

The CAS registry number of Cefepime dioxime is 2923899-40-3.

What is the molecular formula and weight of Cefepime dioxime?

The molecular formula of Cefepime dioxime is C25H29N9O7S3 and its molar mass is 663.76 g/mol.

Is Cefepime dioxime hazardous?

No GHS hazard classification for Cefepime dioxime 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 dioxime?

Cefepime dioxime 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 dioxime?

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What is the price of Cefepime dioxime?

Suppliers quote Cefepime dioxime 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 dioxime

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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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