C20H28O
vitamin A2 vitamin A2 n. dehydroretinol ({C20H28O}), one of the substances also called {vitamin A}. It has about 40% of the bioactivity of vitamin A1.

Syn: dehydroretinol. [WordNet 1.5 +PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • C20H28O — Retinal Ret i*nal, n. (Chem.) A retinoid compound ({C20H28O}), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called {retinaldehyde} and {vitamin A aldehyde}. [PJC] …   The Collaborative International Dictionary of English

  • Retinal — Ret i*nal, n. (Chem.) A retinoid compound ({C20H28O}), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called {retinaldehyde} and {vitamin A aldehyde}. [PJC] …   The Collaborative International Dictionary of English

  • retinaldehyde — Retinal Ret i*nal, n. (Chem.) A retinoid compound ({C20H28O}), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called {retinaldehyde} and {vitamin A aldehyde}. [PJC] …   The Collaborative International Dictionary of English

  • vitamin A — vitamin A2 vitamin A2 n. dehydroretinol ({C20H28O}), one of the substances also called {vitamin A}. It has about 40% of the bioactivity of vitamin A1. Syn: dehydroretinol. [WordNet 1.5 +PJC] …   The Collaborative International Dictionary of English

  • vitamin A aldehyde — Retinal Ret i*nal, n. (Chem.) A retinoid compound ({C20H28O}), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called {retinaldehyde} and {vitamin A aldehyde}. [PJC] …   The Collaborative International Dictionary of English

  • vitamin A2 — n. dehydroretinol ({C20H28O}), one of the substances also called {vitamin A}. It has about 40% of the bioactivity of vitamin A1. Syn: dehydroretinol. [WordNet 1.5 +PJC] …   The Collaborative International Dictionary of English

  • retinal — I. adjective Date: 1838 of, relating to, involving, or being a retina II. noun Etymology: retin + 3 al Date: 1944 a yellowish to orange aldehyde C20H28O derived from vitamin A that in combination with proteins forms the visual pigments of the… …   New Collegiate Dictionary

  • Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …   Wikipedia

  • Retinal — chembox new ImageFile = Retinal structure.png ImageSize = IUPACName = OtherNames = Formula = C20H28O PubChem = 1070 SMILES = MolarMass= 284.436 Appearance = CASNo = 116 31 4 Density= MeltingPt= 63 °C BoilingPt= Solubility = MainHazards = FlashPt …   Wikipedia

  • 11-cis-Retinal — Strukturformel 11 cis Retinal …   Deutsch Wikipedia

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