methemoglobin

synonym: methaemoglobin
https://doi.org/10.1351/goldbook.15880
Derivative of hemoglobin that is formed when the iron(II) in the heme porphyrin is oxidized to iron(III); this derivative cannot transport dioxygen.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1260 [Terms] [Paper]