p. 1368 - 1371
(2004)p. 589 - 594
(2007/10/02)diethyl 5-bromo-3-methylpyrrole-2,4-dicarboxylate
3-methyl-1H-pyrrole-2,4-dicarboxylic acid diethyl ester
diethyl 5-formyl-3-methylpyrrole-2,4-dicarboxylate
1-amino-3-methyl-1H-pyrrole-2,4-dicarboxylic acid diethyl ester