Synonyms: 6-Pteridinepropanoic acid, 2,4-diamino-.alpha.-(4-carboxyphenyl)-.alpha.-2-propyn-1-yl-;6-Pteridinepropanoic acid, 2,4-diaMino-a-(4-carboxyphenyl)-a-2-propynyl-;6-Pteridinepropanoic acid, 2,4-diaMino-α-(4-carboxyphenyl)-α-2-propyn-1-yl-;4-(2-Carboxy-1-(2,4-diaminopteridin-6-yl)pent-4-yn-2-yl)benzoic acid;10-Propargyl-10-carboxy-4-deoxy-4-amino-10-deazapteroic acid;2,4-Diamino-alpha-(4-carboxyphenyl)-alpha-2-propynyl-6-pteridinepropanoic acid