138117-50-7 4-((3-(1,6-Dihydro-6-oxo-9H-purin-9-yl)-1-oxopropyl)amino)benzoic acid AIT 082 acid Ait 082 Benzoic acid, 4-((3-(1,6-dihydro-6-oxo-9H-purin-9-yl)-1-oxopropyl)amino)- Leteprinim N-(4-Carboxyphenyl)-3-(6-oxohydropurin-9-yl)propanamide