D4 Antagonists
D4, D.IV, d4 or variants may refer to: Science and medicine * 22-Dihydroergocalciferol, vitamin D4 * D4-isoprostane, a type of isoprostane * ATC code D04, ''Antipruritics, including antihistamines, anesthetics, etc.'', a subgroup of the Anatomical Therapeutic Chemical Classification System * D04, Bowen's disease, Carcinoma in situ of skin ICD-10 code * Dopamine receptor D4, a human gene * Octamethylcyclotetrasiloxane, called D4 Mathematics * Dihedral group of order 4, otherwise known as the Klein four-group * Dihedral group of order 8, the symmetry group of a regular 4-gon * D4 (root system), D4 (root system) Technology and computing * D4 (programming language), a programming language of the Dataphor system * D4 video connector, a type of analog video connector found on Japanese consumer electronics * D4 framing standard, a framing standard for traditional time-division multiplexing Aircraft * Albatros D.IV, a World War I experimental German fighter aircraft * Auster D.4, a 1960 ...
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22-Dihydroergocalciferol
22-Dihydroergocalciferol is a form of vitamin D, also known as vitamin D4. It has the systematic name (5''Z'',7''E'')-(3''S'')-9,10-seco-5,7,10(19)-ergostatrien-3-ol. Vitamin D4 is found in certain mushrooms, being produced from ergosta-5,7-dienol (22,23-dihydroergosterol) instead of ergosterol. See also *Vitamin D#Types, Forms of vitamin D, the five known forms of vitamin D *Lumisterol, a constituent of vitamin D1 References External linksDihydroergocalciferols at lipidmaps.org
Vitamin D {{biochem-stub ...
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