abstract ... the desired -alkyl- -(alkylsulfanyl)-and -alkyl- -(arylsulfanyl)pyrazine- -carboxamides ( a – t, scheme ) were separated by column chromatography from the reaction mixtures obtained by the substitution of chlorine with alkylsulfanyl (methyl, ethyl, propyl, butyl) and arylsulfanyl group in anhydrous...
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information ( ) e-mail sodium dichromate chemicals ad productions is an expert in handling sodium dichromate powders and the production of sodium dichromate solutions. sodium dichromate products chromic acid ad is an expert in handling and producing chromic acid (dichromic acid, chromium trioxide anhydrous...