Fujiwara, Tomoyuki published the artcilePigment formation by ultraviolet-ray decomposition of histidine, Recommanded Product: (2-Methyl-1H-imidazol-4-yl)methanol, the publication is Nagasaki Igakkai Zasshi (1954), 726-30, database is CAplus.
Histidine (I), histamine, imidazoleacetic acid, 4(5)-hydroxymethylimidazole, and 2-methyl-4(5)-hydroxymethyl-imidazole (II) (2 mg. of each compound in 5 ml. of 4% Na2-CO3 solution) were irradiated for 2 hrs. by ultraviolet rays. All except II gave rise to pigment. When I is irradiated, a compound which reacts with Folin-Ciocalteu reagent is formed. Thus, pigment appears to be a polymerized 2-hydroxyimidazole.
Nagasaki Igakkai Zasshi published new progress about 45533-87-7. 45533-87-7 belongs to imidazoles-derivatives, auxiliary class Imidazole,Alcohol,Imidazole, name is (2-Methyl-1H-imidazol-4-yl)methanol, and the molecular formula is C5H8N2O, Recommanded Product: (2-Methyl-1H-imidazol-4-yl)methanol.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem