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4-Amino-4H-1,2,4-triazole, ReagentPlus®, 99%
4-Amino-4H-1,2,4-triazole, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
4-Amino-4H-1,2,4-triazole, Vetec™, reagent grade, 98%