The major peak of 2-Carboxybenzaldehyde reductase activity in human liver co-purifies with hAFAR protein. Sulphydryl substances and some proteins play important roles in preserving the molecular and catalytic properties of 2-Carboxybenzaldehyde reductase.

Amarasterone A (22) is an ecdysteroid that can be isolated from Rhaponticum carthamoides.

PTZ-343 is a potent enhancer of Luminol, acts as an electron transfer mediator, reacting with HRP-II to release HRP and a PTZ-343 radical, which oxidizes luminol anions to induce light emission.