Didanosine impurity G - 9-(2,3-dideoxy-beta-D-glycero-pentofuranosyl)-9H-purin-6-amine (2',3'-dideoxyadenosine)

Flunixin meglumine

Didanosine for system suitability

Didanosine impurity A - 1,7-dihydro-6H-purin-6-one (hypoxanthine)

Coumarin

Didanosine

Chlorphenamine impurity A - 2-(4-chlorophenyl)-4-(dimethylamino)-2-[2-(dimethylamino)ethyl]butanenitrile

Chlorphenamine impurity C - (3RS)-3-(4-chlorophenyl)-N-methyl-3-(pyridin-2-yl)propan-1-amine

Boldine

Captopril impurity E - (2S)-1-isobutyryl-pyrrolidine-2-carboxylic acid