uroporphyrin , heptacarboxylic acid porphyrin and coproporphyrin were the major porphyrins to accumulate when phenobarbital , nifedipine , 3,5-diethoxycarbonyl-2,4,6-trimethylpyridine ( ox-ddc ) and 3,3',4,4'-tetrachorobiphenyl ( tcbp ) were added to chick embryo hepatocyte culture .
C0009988
coproporphyrin
C0032712
porphyrins