Translations:Vitamin B12/89/en

Fat
soluble

A	α-Carotene β-Carotene Retinol^# Tretinoin^#
D	D₂ Ergosterol Ergocalciferol^# D₃ 7-Dehydrocholesterol Previtamin D₃ Cholecalciferol^# 25-hydroxycholecalciferol Calcitriol (1,25-dihydroxycholecalciferol) Calcitroic acid D₄ Dihydroergocalciferol D₅ D analogues Alfacalcidol Dihydrotachysterol Calcipotriol Tacalcitol Paricalcitol
E	Tocopherol Alpha Beta Gamma Delta Tocotrienol Alpha Beta Gamma Delta Tocofersolan
K	Naphthoquinone Phylloquinone (K₁)^# Menaquinones (K₂) Menadione (K₃)^‡ Various (K₄) 4-Amino-2-methyl-1-naphthol (K₅)^‡ 2-Methylnaphthalene-1,4-diamine (K₆) 4-Amino-3-methyl-1-naphthol (K₇)

Water
soluble

Combinations

Multivitamins

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

Types of tetrapyrroles

Bilanes
(Linear)

Phytochromobilin
Phycobilins	Phycoerythrobilin Phycocyanobilin Phycourobilin Phycoviolobilin

Protoporphyrins	Heme (b, c, a, o) Magnesium protoporphyrin Protoporphyrin IX Pterobilin Zinc protoporphyrin
Phytoporphyrins	Chlorophyll c Protochlorophyllide

Reduced
porphyrins

Porphyrinogens	Uroporphyrinogen (I, III) Coproporphyrinogen (I, III) Protoporphyrinogen IX
Chlorins	Chlorophyllide (a, b) Chlorophyll (a, b) Pheophytin (a, b) Bacteriochlorophyll c
Bacteriochlorins	Bacteriochlorophyll a
Isobacteriochlorins	Siroheme Sirohydrochlorin
Corphins	Cofactor F430

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