Synonyms: 174740-42-2;Betulinic acid NHPrCOOH deriv.;AC1LA81K;CHEMBL584778;N-(3beta-Hydroxylup-20(29)-en-28-oyl)-4-aminobutyric acid;N-[3.beta.-Hydroxylup-20(29)-en-28-oyl]-4-aminobutyric acid;Butanoic acid, 4-(((3beta)-3-hydroxy-28-oxolup-20(29)-en-28-yl)amino)-;Butanoic acid, 4-[[(3.beta.)-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]-;4-[[(1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-hydroxy-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysene-3a-carbonyl]amino]butanoic acid