1780. Carbadox

Nomenclature

CAS number: 6804-07-5
(2-Quinoxalinylmethylene)hydrazinecarboxylic acid methyl ester N,N′-dioxide; 3-(2-quinoxalinylmethylene)carbazic acid methyl ester N,N′-dioxide; methyl 3-(2-quinoxalinylmethylene)carbazate N1,N4-dioxide; 2-formylquinoxaline-1,4-dioxide carbomethoxyhydrazone; GS-6244; Fortigro (Pfizer); Mecadox (Pfizer).
C11H10N4O4; mol wt 262.22.
C 50.38%, H 3.84%, N 21.37%, O 24.41%.

Description and references

Prepn: Johnston, BE 669353; idem, US 3371090; US 3433871 (1964, 1968, 1969, all to Pfizer). Animal studies: Thrasher et al., J. Anim. Sci. 26, 911 (1967); Kornegay et al., ibid. 27, 1134 (1968).

Chemical structure

Properties

Minute yellow crystals, mp 239.5-240°. uv max (water): 236, 251, 303, 366, 373 nm (ε 11000, 10900, 36400, 16100, 16200). Practically insol in water.

Therapeutic Category (Veterinary)

Antimicrobial.