Skip Navigation
ChemIDplus LiteBrowseAdvanced

Substance Name: Retinal
RN: 116-31-4
UNII: RR725D715M
InChIKey: NCYCYZXNIZJOKI-OVSJKPMPSA-N

Note

  • A diterpene derived from the carotenoid VITAMIN A which functions as the active component of the visual cycle. It is the prosthetic group of RHODOPSIN (i.e., covalently bonded to ROD OPSIN as 11-cis-retinal). When stimulated by visible light, rhodopsin transforms this cis-isomer of retinal to the trans-isomer (11-trans-retinal). This transformation straightens-out the bend of the retinal molecule and causes a change in the shape of rhodopsin triggering the visual process. A series of energy-requiring enzyme-catalyzed reactions convert the 11-trans-retinal back to the cis-isomer.

Molecular Formula

  • C20-H28-O

Molecular Weight

  • 284.4402
 

Classification Code

  • Mutation Data
* denotes mobile formatted website

Links to Resources

NLM Resources (File Locators)

Regulatory Agencies (Superlist Locators)

Other Resources (Internet Locators)


Search for this InChIKey on the Web

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

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-N

Smiles

C\C(=C/C=O)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C

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.