Molekula
All-trans-Retinal
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
All-trans-Retinal is a retinoid compound essential in visual pigment regeneration and cellular signaling. It is used in biochemical research, ophthalmology studies, and retinoid pathway investigations. Available with CAS number 116-31-4, molecular formula C20H28O, and molecular weight 284.44 g/mol. Stored at -15 to -20 °C. Hazard classification includes Signal Word: Danger. Molekula supplies All-trans-Retinal from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £89.30 per pack ex VAT · £107.16 inc. VAT
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5 g — £234.70 per pack ex VAT · £281.64 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Yellow to orange powder |
| Water | ≤1.0 % |
| Identification | Conforms to reference |
| Solubility | Yellow, Clear (5 mg/ml Acetonitrile) |
| Assay HPLC | ≥98% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 63 °C |
Source: PubChem CID 638015 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 52326571 |
| CAS Number | 116-31-4 |
| IUPAC Name | (2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohexen-1-yl)nona-2,4,6,8-tetraenal |
| EC Number | 204-135-8 |
| Molecular Formula | C20H28O |
| Molecular Weight | 284.44 |
| Exact Mass | 284.214 |
| SMILES | CC1=C(C(CCC1)(C)C)/C=C/C(=C/C=C/C(=C/C=O)/C)/C |
| InChIKey | NCYCYZXNIZJOKI-OVSJKPMPSA-N |
| 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+ |
| PubChem CID | 638015 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2936.21.00.00 |
| Tariff Code | 2936210000 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H360 May damage fertility or the unborn child
- H413 May cause long lasting harmful effects to aquatic life
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P270 Do not eat, drink or smoke when using this product
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P302+350 IF ON SKIN: Gently wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish, Swedish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- all-E-Retinal
- all-trans-Retinaldehyde
- axerophthal
- E-Retinal
- retinal
- retinaldehyde
- retinene
- Retinene 1
- trans-Retinal
- vitamin A aldehyde
Frequently asked questions
What is All-trans-Retinal used for?
All-trans-Retinal is primarily used in research related to vision science, photoreceptor function, and retinoid signaling pathways.
What is the chemical formula and molecular weight of All-trans-Retinal?
The chemical formula is C20H28O with a molecular weight of 284.44 g/mol.
How should All-trans-Retinal be stored?
It should be stored at temperatures between -15 and -20 °C to maintain stability and prevent degradation.
What grade of All-trans-Retinal does Molekula supply?
Molekula supplies All-trans-Retinal in research-grade purity suitable for laboratory use.
Can Molekula supply All-trans-Retinal in bulk quantities?
Yes, Molekula can supply All-trans-Retinal in bulk quantities—please contact our sales team for volume pricing and availability.
What documentation comes with an order of All-trans-Retinal?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.