Title: Ceftezole
CAS Registry Number: 26973-24-0
CAS Name: (6
R,7
R)-8-Oxo-7-[(1
H-tetrazol-1-ylacetyl)amino]-3-[(1,3,4-thiadiazol-2-ylthio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Synonyms: 7-(1
H-tetrazol-1-yl)acetamido-3-(1,3,4-thiadiazol-2-ylthio)methylceph-3-em-4-carboxylic acid; CTZ
Manufacturers' Codes: CG-B3Q
Molecular Formula: C13H12N8O4S3
Molecular Weight: 440.48
Percent Composition: C 35.45%, H 2.75%, N 25.44%, O 14.53%, S 21.84%
Literature References: Broad spectrum antibiotic similar to cefazolin,
q.v. Prepn: T. Takano
et al., ZA 6804513; e
idem, US 3516997 (1969, 1970 both to Fujisawa).
In vitro and
in vivo activity: T. Noto
et al., J. Antibiot. 29, 1058 (1976). Pharmacology: Y. Harada
et al., ibid. 1071; M. Kakimoto
et al., Chemotherapy (Tokyo) 24, 722 (1976). Metabolism: K. Koyama
et al., ibid. 619; Y. Tohira
et al., ibid. 655. Clinical study: S. Ishiyama
et al., ibid. 1006. Toxicity and teratogenicity studies: R. Niki
et al., ibid. 671.
Properties: Solid, mp 155° (dec). uv max (phosphate buffer pH 6.4): 273 nm (E1%1cm 274).
Melting point: mp 155° (dec)
Absorption maximum: uv max (phosphate buffer pH 6.4): 273 nm (E1%1cm 274)
Derivative Type: Sodium salt
CAS Registry Number: 41136-22-5
Manufacturers' Codes: FR-10123
Trademarks: Celoslin (Hoechst); Falomesin (Chugai)
Molecular Formula: C13H11N8NaO4S3
Molecular Weight: 462.46
Percent Composition: C 33.76%, H 2.40%, N 24.23%, Na 4.97%, O 13.84%, S 20.80%
Properties: White solid, freely sol in water.
Therap-Cat: Antibacterial.
Keywords: Antibacterial (Antibiotics); ?Lactams; Cephalosporins.