Dolutegravir M1 is a metabolite of the HIV integrase inhibitor dolutegravir .1It is formed primarily by the cytochrome P450 (CYP) isoforms CYP1A1 and CYP1B1. 1.Zhu, J., Wang, P., Li, F., et al.CYP1A1 and 1B1-mediated metabolic pathways of dolutegravir, an HIV integrase inhibitorBiochem. Pharmacol.158174-184(2018)
Lopinavir Metabolite M-1, an active metabolite derived from Lopinavir, effectively inhibits the HIV protease enzyme with a Ki value of 0.7 pM. Additionally, in vitro studies have revealed notable antiviral properties associated with Lopinavir Metabolite M-1.
Antibiotic MA 144M1 is an anthracycline glycoside that inhibits the growth of gram-positive bacteria, e.g. Staphyococcus aureaus, Bacillus subtilis and Sarcina lutea, and inhibits the growth of animal tumors such as leukemia L 1210, P 388 and sarcoma 180. It's produced by fermentation of MA 144-producing strains of streptomyces and by the chemical or enzymatic conversion of aclacinomycin A or cinerubin A.