Ethylene thiourea96-45-7100 % similar Tetrahydropyrimidine-2-thione2055-46-171 % similar N,N'-Di-N-butylthiourea109-46-656 % similar 2-Imidazolidinone120-93-443 % similar Lysidine (chemical)534-26-942 % similar N,N′-Diethylthiourea105-55-541 % similar 1-Allyl-3-(2-hydroxyethyl)-2-thiourea105-81-741 % similar N-Butylhydrazinecarbothioamide6610-31-735 % similar 2-(Chloromethyl)-4,5-dihydro-1H-imidazole hydrochloride13338-49-334 % similar 2-Hydrazino-2-imidazoline hydrobromide55959-84-734 % similar 2-Phenylimidazoline936-49-233 % similar 2,2′-Azobis[2-(2-imidazolin-2-yl)propane] dihydrochloride27776-21-231 % similar 4,5-Dihydro-N-nitro-1H-imidazol-2-amine5465-96-331 % similar Tolazoline59-98-331 % similar