the drug antipyrine and its 4-substituted analogs , 4-aminoantipyrine , 4-dimethylaminoantipyrine ( aminopyrine ) and 4-nitrosoantipyrine were tested for mutagenicity against the screening array of salmonella typhimurium tester strains ta100 , ta98 , ta97 , ta102 and ta104 .
C0002696
4-dimethylaminoantipyrine
C0002586
aminopyrine