Pyrido[2,3-d]pyrimidine,2,4-diamino-6-sec-butyl-5-methyl- (7CI,8CI); 2,4-Diamino-5-methyl-6-sec-butylpyrido[2,3-d]pyrimidine;6-sec-Butyl-2,4-diamino-5-methylpyrido-[2,3-d]-pyrimidine; BW 283U; BW 58-283;BW 58-283b
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