C20H28O
284.4 g/mol
APIDanger
All-trans-Retinal
CAS116-31-4EC204-135-8
Category
API
Compound Class
Natural Product
Primary Use
Pharmaceutical Raw Material
all-trans-Retinal is a polyene chromophore and a vitamin A aldehyde metabolite. It is the chemical basis of visual phototransduction, where it binds to opsin proteins to enable light detection in vision.
research compound for visual phototransduction studieschemical intermediate in retinoid manufacturing
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
SimilarStructure SimilarSimilarity 0.84
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Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H360May damage fertility or the unborn child
H413May cause long lasting harmful effects to aquatic life
Customs Tariff Classification
The international HS code for All-trans-Retinal (CAS 116-31-4) is 2936.21.
HS code (international, 6-digit)
2936.21
EU CN code (8-digit)
2936 21 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohexen-1-yl)nona-2,4,6,8-tetraenal
InChIKey
NCYCYZXNIZJOKI-OVSJKPMPSA-N
SMILES
CC1=C(C(CCC1)(C)C)/C=C/C(=C/C=C/C(=C/C=O)/C)/C
Synonyms (42)
- 11 cis Retinal
- 11 trans Retinal
- 13-Cis retinal
- 2g79
- Aldehydde, Retinyl
- Aldehyde, Vitamin A
- E-Retinal
- RETINAL TRANS-ISOMER
- RETINALDEHYDE [MART.]
- Retinal, all-trans
- Retinaldehyde (VAN)
- Retinene 1
- Retinin
- Retinyl Aldehydde
- Retinyl aldehyde
- TOCOPHEROL, ALPHA
- Vitamin A1 aldehyde
- all trans-Retinal, powder
- all-E-Retinal
- all-epsilon-Retinal
- all-trans Retinal-14,15-13C2
- all-trans-Retinal
- all-trans-Retinaldehyde
- all-trans-Retinene
- all-trans-Vitamin A aldehyde
- axerophthal
- epsilon-Retinal
- retinal
- retinaldehyd
- retinaldehyde
- retinene
- trans-Retinal
- trans-Vitamin A aldehyde
- vitamin A aldehyde
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