Structural Formula Vector Image
Title: Sulfamethoxypyridazine
CAS Registry Number: 80-35-3
CAS Name: 4-Amino-N-(6-methoxy-3-pyridazinyl)benzenesulfonamide
Additional Names: N1-(6-methoxy-3-pyridazinyl)sulfanilamide; 6-methoxy-3-sulfanilamidopyridazine; 3-(p-aminobenzenesulfamido)-6-methoxypyridazine
Manufacturers' Codes: CL-13494; RP-7522
Trademarks: Lederkyn (Wyeth); Midicel (Warner-Lambert); Midikel (Parke-Davis)
Molecular Formula: C11H12N4O3S
Molecular Weight: 280.30
Percent Composition: C 47.13%, H 4.32%, N 19.99%, O 17.12%, S 11.44%
Literature References: Prepn: Clark, US 2712012 (1955 to Am. Cyanamid). Toxicity: Seki et al., Arzneim.-Forsch. 15, 1441 (1965). Toxicological, chemotherapeutic and pharmacokinetic studies: Böhni et al., Chemotherapy 14, 195-226 (1969).
Properties: Bitter crystals from water, mp 182-183°. pKa 6.7. Soly in water at 37° (mg/100 ml): 110 at pH 5; 120 at pH 6; 147 at pH 6.5. Slightly sol in methanol, ethanol (about 1:200); more sol in acetone (1:50), in dimethylformamide (1 g/1 ml). Freely sol in aq solns of alkali hydroxides. LD50 orally in mice: 1750 mg/kg, (Seki).
Melting point: mp 182-183°
pKa: pKa 6.7
Toxicity data: LD50 orally in mice: 1750 mg/kg, (Seki)
Derivative Type: Sodium salt
CAS Registry Number: 2577-32-4
Trademarks: Davosin (Pharmacia); Sulfoxine LA (Univet)
Molecular Formula: C11H11N4NaO3S
Molecular Weight: 302.28
Percent Composition: C 43.71%, H 3.67%, N 18.53%, Na 7.61%, O 15.88%, S 10.61%
Therap-Cat: Antibacterial.
Therap-Cat-Vet: Antibacterial.
Keywords: Antibacterial (Synthetic); Sulfonamides.

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