4-(2-CHLOROETHYL)ACETOPHENONE

2-Morpholinoethyl isocyanide

4-(2-METHYL-4-NITRO-1H-IMIDAZOL-1-YL)BUTAN-2-ONE

4-(2-PHENYLETH-1-YNYL)BENZONITRILE

4-(2-PYRIDYLAZO)-N,N-DIMETHYLANILINE

4-(2-THIAZOLYLAZO)RESORCINOL

3-THIOPHEN-2-YL-BENZALDEHYDE

4-(2-THIENYLMETHYL)-1LAMBDA6,4-THIAZINANE-1,1-DIONE

4-(3-HYDROXY-3-METHYLBUT-1-YNYL)BENZALDEHYDE OXIME

4-(3-METHOXYANILINO)-4-OXOBUT-2-ENOIC ACID

4-(3-NITROANILINO)-4-OXOBUT-2-ENOIC ACID