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ChemicalBook--->CAS DataBase List--->116-31-4

116-31-4

116-31-4 Structure

116-31-4 Structure
IdentificationMore
[Name]

ALL-TRANS-RETINAL
[CAS]

116-31-4
[Synonyms]

ALL-TRANS-RETINAL
ALL-TRANS-VITAMIN-A-ALDEHYDE
RETINAL ALL TRANS
VITAMIN A ALDEHYDE
2,4,6,8-Nonatetraenal, 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-
2,4,6,8-Nonatetraenal, 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (all-E)-
all-E-Retinal
all-trans-retina
All-trans-Retinaldehyde
alpha-Retinene
Axerophthal
E-Retinal
Retinaldehyde
Retinene
Retinene1
trans-Retinal
trans-Vitamin A aldehyde
trans-vitaminaaldehyde
Vitamin A1 aldehyde
vitamina1aldehyde
[EINECS(EC#)]

204-135-8
[Molecular Formula]

C20H28O
[MDL Number]

MFCD00001550
[Molecular Weight]

284.44
[MOL File]

116-31-4.mol
Chemical PropertiesBack Directory
[Appearance]

Yellow Powder
[Melting point ]

61-63°C
[Boiling point ]

366.92°C (rough estimate)
[density ]

1.0083 (rough estimate)
[refractive index ]

1.4500 (estimate)
[storage temp. ]

−20°C
[solubility ]

Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
[form ]

powder
[color ]

yellow
[biological source]

synthetic (organic)
[Water Solubility ]

<70mg/L(25 ºC)
[Usage]

Corotenoid component of the visual pigments
[Stability:]

Hygroscopic, Light Sensitive, Temperature Sensitive
[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(=O)/C=C(/C=C/C=C(/C=C/C1C(C)(C)CCCC=1C)\C)\C
[Uses]

retinaldehyde is a mild retinoid credited with increasing epidermal thickness without producing erythema.
[CAS DataBase Reference]

116-31-4(CAS DataBase Reference)
[EPA Substance Registry System]

Retinal (116-31-4)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R22:Harmful if swallowed.
R38:Irritating to the skin.
[Safety Statements ]

S22:Do not breathe dust .
S36/37:Wear suitable protective clothing and gloves .
[WGK Germany ]

3
[RTECS ]

VH6407000
[HS Code ]

29122990
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Vitamin A-->EC 1.1.1.1
[Preparation Products]

9-CIS-RETINAL
Hazard InformationBack Directory
[Chemical Properties]

Yellow Powder
[Definition]

ChEBI: A retinal in which all four exocyclic double bonds have E- (trans-) geometry.
[Synthesis Reference(s)]

Tetrahedron Letters, 29, p. 419, 1988 DOI: 10.1016/S0040-4039(00)80111-2
[General Description]

All trans-Retinal is one of the major derivatives of vitamin A group. A variety of food serves as a source of vitamin A. It is predominant in liver and among the brightly colored vegetables.
[Biological Activity]

all-trans retinal, also known as vitamin a aldehyde or retinaldehyde, is one of the many forms of vitamin a and also the oxidation product of all-trans retinol [1]. all-trans retinal are associated with one of the two isoforms of cellular retinol-binding proteins (crbp-i and crbp-ii) with kd values of 50 and 90 nm, respectively [1].crbp-i and crbp-ii were the first intracellular retinoid-binding proteins. both proteins display a similar binding affinity towards retinal. they play important roles in retinoid biology and regulation of the metabolism of retinol and retinal. crbp-i is used to regulate vitamin a storage and synthesis of retinoic acid. and crbp-ii has a role in the initial processing of retinol from food [1].all-trans retinal is one form of vitamin a. all-trans retinal, the initial substrate of retinoid cycle, is a chemically reactive aldehyde that can form toxic conjugates with proteins and lipids, leading to degeneration of the retina [2].
[Biochem/physiol Actions]

All-trans retinal is converted to retinoic acid in vivo by the action of retinal dehydrogenase. Retinoic acid is a ligand for both the retinoic acid receptor (RAR) and the retinoid X receptor (RXR) that act as transcription factors to regulate the growth and differentiation of normal and malignant cells. Retinal isomers are also chromophores that bind to opsins, a family of G-protein-linked transmembrane proteins, to form photosensitive receptors in visual and nonvisual systems. All-trans retinal is a potent photosensitizer.
[Purification Methods]

The aldehyde is separated from retinol by column chromatography on water-deactivated alumina. Elute with 1-2% acetone in hexane, or on TLC plates of silica gel G and using the same eluting solvent. It crystallises from pet ether or n-hexane as yellow-orange crystals, and the UV in hexane has max at 373nm (A1cm 1% 1,548) and 368nm ( 48,000). It is an irritant and is light sensitive. Store it in sealed ampoules under N2. The semicarbazone forms yellow crystals from CHCl3/Et2O or EtOH, m 199-201o(dec). The 9-cis-isomer [514-85-2] and the 13-cis-isomer [472-86-6] [max at 375nm ( 1,250) in EtOH] are also available commercially. [Beilstein 7 III 1742.]
[References]

[1]. noy n. retinoid-binding proteins: mediators of retinoid action. biochem j. 2000 jun 15;348 pt 3:481-95.
[2]. kiser pd, golczak m, maeda a, et al. key enzymes of the retinoid (visual) cycle in vertebrate retina. biochim biophys acta. 2012 jan;1821(1):137-51.
Spectrum DetailBack Directory
[Spectrum Detail]

ALL-TRANS-RETINAL(116-31-4)1HNMR
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

116-31-4(sigmaaldrich)
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