[2-[(2Z)-2-[(4-methoxyphenyl)methylidene]hydrazinyl]-2-oxoethyl]-trimethylazanium,chloride

trimethyl-[2-[(2E)-2-[(4-methylphenyl)methylidene]hydrazinyl]-2-oxoethyl]azanium,chloride

[2-[(2E)-2-[(4-chlorophenyl)methylidene]hydrazinyl]-2-oxoethyl]-trimethylazanium,chloride

trimethyl-[2-oxo-2-[2-[(6-oxocyclohexa-2,4-dien-1-ylidene)methyl]hydrazinyl]ethyl]azanium