Aminopteridin
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2-[[4-[1-(2,4-diaminopteridin-6-yl)ethylamino]benzoyl]amino]pentanedioic AcidCAS 751-19-9 Cat. 1773334 -
2-[(4-{[(2,4-diaminopteridin-6-yl)methyl]amino}benzoyl)amino]-4-sulfobutanoic acidCAS 96193-19-0 Cat. 1988128