Alfacalcidol

Vitamin D₃ precursor

Converts to active calcitriol (1α,25-dihydroxyvitamin D3; Prod. No. ALX-460-032) in vivo. Inhibits bone resorption.

Alternative Name:	Hydroxyvitamin D₃, 1-Hydroxycholecalciferol, (1α,3β,5Z,7E)-9,10-Secocholesta-5,7,10(19)-triene-1,3-diol

Formula:	C₂₇H₄₄O₂

MW:	400.6

Purity:	≥97%

Appearance:	White to off-white crystals.

CAS:	41294-56-8

RTECS:	VS2851000

Solubility:	Soluble in 100% ethanol.

Long Term Storage:	-20°C

Handling:	Keep under inert gas. Protect from light.