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7-benzyl-4-chloro-5H,6H,7H,8H-pyrido[3,4-d]pyrimidin-2-amine 7-benzyl-4-chloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-2-amine 4-chloro-7-(phenylmethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-2-amine Pyrido[3,4-d]pyrimidin-2-amine, 4-chloro-5,6,7,8-tetrahydro-7-(phenylmethyl)- 7-benzyl-4-chloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-2-amine ISO 9001：2015 REACH