methemoglobin

1,9-Dimethylmethylene blue is a photosensitizer, virus inactivator and hemoglobin oxidant derived from methylene blue. When activated, 1,9-Dimethylmethylene blue generates reactive oxygen species including singlet oxygen, and acts as a metachromatic dye. When activated in monomeric or dimeric form, 1,9-Dimethylmethylene blue induces photoinactivation of R17 phage and vesicular stomatitis virus and oxidizes hemoglobin via non-singlet oxygen reactive oxygen species or singlet oxygen-mediated pathways, respectively. The monomeric form, with higher nucleic acid affinity, achieves virus inactivation under specific conditions without forming methemoglobin. 1,9-Dimethylmethylene blue binds to substances such as glycosaminoglycans to produce color changes. Although it is susceptible to interference from non-glycosaminoglycan components in urine, it is still applicable to spectrophotometric analysis for glycosaminoglycan quantification. With these unique photochemical and binding properties, 1,9-Dimethylmethylene blue is widely used in studies of viral infections and related biochemical analyses .

WR 199507 trihydrobromide, a putative Primaquine (HY-12651A) metabolite, causes methemoglobin formation in canine hemolysates .

Methoxyurea (Compound 3) is a potential regulator of nitric oxide (NO) donors that acts on hemoglobins such as oxy-hemoglobin (OxyHb) and met-hemoglobin (MetHb). Methoxyurea is promising for research of sickle cell disease (SCD) .

4-(Dimethylamino)phenol hydrochloride is a potent cyanide antidote. 4-(Dimethylamino)phenol hydrochloride binds to hemoglobin, and form methemoglobin. 4-(Dimethylamino)phenol hydrochloride can be used in cyanide poisoning research .