porphyrin

As a noun porphyrin

is porphyrin.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between porphine and porphyrin

is that porphine is an alternative spelling of porphin while porphyrin is any of a class of heterocyclic compounds containing four pyrrole rings arranged in a square; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc.).

As nouns the difference between porphyrin and corphyrin

is that porphyrin is porphyrin while corphyrin is (organic chemistry) corrinoid.

As nouns the difference between taxonomy and porphyrin

is that taxonomy is the science or the technique used to make a classification while porphyrin is porphyrin.

As nouns the difference between porphyrin and uroporphyrinogen

is that porphyrin is any of a class of heterocyclic compounds containing four pyrrole rings arranged in a square; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc.) while uroporphyrinogen is any of a class of tetrapyrroles with four propionic acid groups and four acetic acid groups, involved in the synthesis of porphyrin.

As nouns the difference between porphyrin and porphycene

is that porphyrin is porphyrin while porphycene is (organic chemistry) a structural isomer of porphyrin that acts as a photosensitizer.

As nouns the difference between porphyrin and sirohydrochlorin

is that porphyrin is any of a class of heterocyclic compounds containing four pyrrole rings arranged in a square; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc.) while sirohydrochlorin is a porphyrin derivative related to heme.

As nouns the difference between porphyrin and porphobilinogen

is that porphyrin is porphyrin while porphobilinogen is a pyrrole involved in porphyrin metabolism, generated by aminolevulinate and the enzyme ala dehydratase.

As nouns the difference between porphyrin and hematoporphyria

is that porphyrin is porphyrin while hematoporphyria is (medicine) a disorder of porphyrin metabolism in which uroporphyrin and coproporphyrin are present in the tissues and urine.