Kalmar "flavin" tana nufin kowane rukuni na kwayoyin halitta waɗanda aka rarraba a cikin yanayi kuma suna da mahimmanci a cikin matakai daban-daban na nazarin halittu, ciki har da metabolism na carbohydrates, fats, da proteins. Flavins yawanci launin rawaya ne ko orange kuma sun haɗa da riboflavin, wanda shine ɓangaren bitamin B2.
