Penicillin G Benethamine
Title: Penicillin G Benethamine
CAS Registry Number: 751-84-8
CAS Name: (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-[(phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid compd with N-(phenylmethyl)benzeneethanamine (1:1)
Additional Names: benzylpenicillinic acid N-benzyl-b-phenylethylamine salt; benethamine penicillin G
Molecular Formula: C31H35N3O4S
Molecular Weight: 545.69
Percent Composition: C 68.23%, H 6.46%, N 7.70%, O 11.73%, S 5.88%
Literature References: Repository form of penicillin G. Prepn: Jansen, Hems, GB 732559 (1955 to Glaxo). Clinical studies: Nelson et al., Br. Med. J. II, 339 (1954); Boger et al., Antibiot. Annu. 1954-55, 123.
Properties: Crystals, mp 146-147°. Slight, characteristic, amine taste. Very slightly sol in water (0.1 w/v at 40°).
Melting point: mp 146-147°
Therap-Cat-Vet: Antibacterial.

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