Precursor to metabolite: Cholecalciferol to Calcifediol

Cholecalciferol is converted to Calcifediol by CYP2R1.

Cholecalciferol mascot — mnemonic cartoon — Visual mnemonic: Cholecalciferol mascot

The pair

Cholecalciferol — Vitamin D3; the common OTC supplement, precursor to active calcitriol.
Calcifediol — 25-hydroxyvitamin D and calcitriol precursor for secondary hyperparathyroidism.

Cholecalciferol · Calcifediol · Open Cholecalciferol in the interactive console ↗