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Substance Name: Retinal
RN: 116-31-4
UNII: RR725D715M
InChIKey: NCYCYZXNIZJOKI-OVSJKPMPSA-N
Note
- A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration.
Molecular Formula
- C20-H28-O
Molecular Weight
- 284.4402
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- Mutation Data
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Names and Synonyms
Name of Substance
- Retinal
- Retinaldehyde
MeSH Heading
- Retinaldehyde
Synonyms
- 4-07-00-01253 (Beilstein Handbook Reference)
- all-E-Retinal
- all-trans-Retinal
- all-trans-Retinaldehyde
- all-trans-Vitamin A aldehyde
- Axerophthal
- BRN 1914183
- E-Retinal
- EINECS 204-135-8
- NSC 122757
- NSC 626581
- Retinal, all-trans
- Retinaldehyde
- Retinaldehyde (VAN)
- Retinene
- Retinene 1
- Retinyl aldehyde
- TOCOPHEROL, ALPHA
- trans-Retinal
- UNII-RR725D715M
- Vitamin A aldehyde
- Vitamin A1 aldehyde
Systematic Names
- Retinal
- Retinal, all-trans-
- Retinaldehyde
Registry Numbers
CAS Registry Number
- 116-31-4
FDA UNII
- RR725D715M
Other Registry Number
- 7058-59-5
System Generated Number
- 0000116314
Structure Descriptors
InChI
1S/C20H28O/c1-16(8-6-9-17(2)13-15-21)11-12-19-18(3)10-7-14-20(19,4)5/h6,8-9,11-13,15H,7,10,14H2,1-5H3/b9-6+,12-11+,16-8+,17-13+InChIKey
NCYCYZXNIZJOKI-OVSJKPMPSA-NSmiles
C\C(=C/C=O)Physical Properties
Physical Property | Value | Units | Temp (deg C) | Source |
---|---|---|---|---|
Melting Point | 63 | deg C | EXP | |
log P (octanol-water) | 7.600 | (none) | EST | |
Atmospheric OH Rate Constant | 3.07E-10 | cm3/molecule-sec | 25 | EST |
Physical property data is provided to ChemIDplus by SRC, Inc.