Hexamethylcyclotrisiloxane
hexachlorocyclohexane gamma-isomer
hexobendine dihydrochloride
Hydantoin, 5-(p-methoxybenzylidene)-
Hydrazine dihydrochloride
Hydrazine, 1,1'-biphenylylenedi-, dihydrochloride
hexaethylene glycol monodecyl ether
Hydroxylamine, N-nitroso-N-p-tolyl- (7CI,8CI)
Hydrazinecarbothioamide, 2-[ (4-hydroxy-3-methoxyphenyl)methylene]-