1H-Pyrrole-1-hexanoic acid, alpha-amino-2-formyl-5-(hydroxymethyl)-, (S)- 2-Amino-6-(2-formyl-5-hydroxymethylpyrrol-1-yl)hexanoic acid 2-Fhmpn 2-formyl-5-(hydroxymethyl)pyrrole-1-norleucine 74509-14-1 Pyrraline