盐酸***杂质对照品MetforminHydrochloride盐酸***杂质MetforminHydrochlorideImpurityA(EP):Cyanoguanidine盐酸***杂质MetforminHydrochlorideImpurityB(EP)asNitrate:(4,6-Diamino-1,3,5-triazin-2-yl)guanidineNitrate盐酸***杂质MetforminHydrochlorideImpurityC(EP):N,N-Dimethyl-1,3,5-triazine-2,4,6-triamine盐酸***杂质MetforminHydrochlorideImpurityD(EP):1,3,5-Triazine-2,4,6-triamine(Melamine)盐酸***杂质MetforminHydrochlorideImpurityE(EP)asHydrochloride:1-MethylbiguanideHydrochloride盐酸***杂质MetforminHydrochlorideImpurityF(EP)asHydrochloride:N-MethylmethanamineHydrochloride***-D6Metformin-d6)