5-Formyl-5,6,7,8-tetrahydromethanopterin 5-Formyl-H4MPT 99451-79-3 N(5)-Formyltetrahydromethanopterin Pentitol, 1-(4-((1-(2-amino-5-formyl-1,4,5,6,7,8-hexahydro-7-methyl-4-oxo-6-pteridinyl)ethyl)amino)phenyl)-1-deoxy-5-O-(5-O-((1,3-dicarboxypropoxy)hydroxyphosphinyl)-alpha-D-ribofuranosyl)-