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Cefmenoxime

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Cefmenoxime Basic information

Product Name:
Cefmenoxime
Synonyms:
  • CEFMENOXIME
  • (6r-(6alpha,7beta(z)))-7-(((2-amino-4-thiazolyl)(methoxyimino)acetyl)amino)-3-(((1-methyl-1h-tetrazol-5-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid
  • (6R,7R)-7-[[(Z)-(2-Aminothiazol-4-yl)(methoxyimino)acetyl]amino]-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • (6R,7R)-7α-[2-(2-Amino-4-thiazolyl)-2-[(Z)-methoxyimino]acetylamino]-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  • 7β-[[(Z)-(2-Amino-4-thiazolyl)(methoxyimino)acetyl]amino]-3-[[(1-methyl-1H-tetrazole-5-yl)thio]methyl]cepham-3-ene-4-carboxylic acid
  • CMX
  • (6R,7R)-7-[(2E)-2-(2-aMino-1,3-thiazol-4-yl)-2-(MethoxyiMino)acetaMido]-3-{[(1-Methyl-1H-1,2,3,4-tetrazol-5-yl)sulfanyl]Methyl}-8-oxo-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, 7-[[(2-amino-4-thiazolyl)(methoxyimino)acetyl]amino]-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-, [6R-[6α,7β(Z)]]-
CAS:
65085-01-0
MF:
C16H17N9O5S3
MW:
511.56
EINECS:
278-299-4
Product Categories:
  • Pharmaceutical intermediate
Mol File:
65085-01-0.mol
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Cefmenoxime Chemical Properties

Density 
1.96±0.1 g/cm3(Predicted)
pka
2.61±0.50(Predicted)
CAS DataBase Reference
65085-01-0(CAS DataBase Reference)
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Cefmenoxime Usage And Synthesis

Originator

Tacef,Takeda,W. Germany,1983

Uses

Antibacterial.

Definition

ChEBI: A third-generation cephalosporin antibiotic, bearing a 2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)acetyl]amino group at the 7beta-position and a [(1-methyl-1H-tetrazol-5-yl)sulfanyl]methyl group at the 3-position.

Manufacturing Process

7β-[α-Methoxyimino-α-(2-aminothiazol-4-yl)acetamido]cephalosporanicacid trifluoroacetic acid salt is dissolved in a solution of 272 mg of 1-methyl-5- mercapto-1H-tetrazole, 555 mg of sodium bicarbonate and 68 mg of triethylbenzylammonium bromide in 10 ml of water. The solution is heated at 60°C in nitrogen atmosphere for 6 hours. After cooling, the reaction solution is passed through a column of Amberlite XAD-2 and eluted with water and then with 2.5% ethanol. The procedure yields sodium 7β-[α-methoxyimino-α- (2-aminothiazol-4-yl)acetamido]-3-(1-methyl-1H-tetrazol-5-ylthiomethyl)-3- cephem-4-carboxylate, MP 174°C to 175°C (decomposition).

brand name

Cefmax (TAP).

Therapeutic Function

Antibacterial

Antimicrobial activity

A semisynthetic cephalosporin supplied as the hydrochloride. Its activity is very similar to that of cefotaxime. A 500 mg intramuscular injection achieves a plasma concentration of 15 mg/L after 40 min. A concentration of 200 mg/L is attained after intravenous administration of 1 g. The plasma half-life is c. 1 h. Around 77% is protein bound. Probenecid increases peak plasma levels and extends the plasma half-life to 1.8 h. Therapeutic concentrations are achieved in CSF. There is a degradation product with a long half-life (around 40 h), but 80–92% of the drug is recovered unchanged from the urine. In patients with renal insufficiency, no significant relation was found between creatinine clearance and peak serum concentrations but there was a linear relationship with plasma half-life and total body clearance. About 10% of the dose appears in the feces, mostly extensively degraded, possibly by the fecal flora.
Toxicity, side effects and clinical use are those common to group 4 cephalosporins.

CefmenoximeSupplier

Nanjing Chemlin Chemical Co., Ltd
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