Words to Describe porphyrins

How porphyrins often is described ("________ porphyrins")

• fecal
• intermediate
• molecular
• red
• soluble
• excited
• dicarboxylic
• photoactive
• simple
• substituted
• carboxylic
• certain
• colored
• type
• endogenous
• various
• bacterial
• excess
• several
• isomeric
• carboxyl
• alkylated
• containing
• diamagnetic
• iron
• natural
• fluorescent
• intestinal
• derived
• total
• active
• synthetic
• corresponding
• excreted
• biological
• symmetric
• carboxylated
• preformed
• excessive
• induced
• reduced
• free
• respective
• erythrocyte
• peripheral
• urinary
• brominated
• photoexcited
• abnormal
• metal
• photoactivated
• urine
• exogenous
• cationic
• faecal
• ferric
• elevated
• related
• ferrous
• dimeric
• chiral
• linked
• typical
• monomeric
• hepatic
• different
• base
• fossil
• other
• modified
• bound
• individual
• neutral
• isolated