This is an answer key for the Name these chemicals worksheet. If you think you have other possible names for some of these, check with me.

Top row, left to right:
2-amino-3,4-dimethylbenzoic acid
2-methyl-5-nitrobenzothiazole
malonamamidine hydrochloride
methyl 5-bromopyridine-2-carboxylate

Middle row, left to right:
ethyl 6-amino-5-methoxyindole-2-carboxylate
2-formylbenzeneboronic acid
5-iodo-2-methoxyaniline
N-isopropylpiperazine

Bottom row, left to right:
2-ethoxy-1-naphthaldehyde
4-(methylthio)benzoic acid
1-methyl-2-formylbenzimidazole
N-(diphenylmethylene)glycine ethyl ester