for the following products
2,2'-Azo-bis-(2-amidinopropane) hydrochloride | 2,2'-Azo-bis-(2-Amidopropane) hydrochloride | 2,2'-Azo-bis-(isobutyramidine) dihydrochloride | alpha,alpha-Azodiisobutyramidine dihydrochloride and 2,2'-Azo-bis(2-methylpropionamide) dihydrochloride
