Vitamin A EP Impurity C（Mixture of Z and E Isomers） CAS 16729-22-9
CAS 16729-22-9 ((3E)-isomer)
Cat. no. C4X-17793 Formula C20H30O
MW 286.45
On synthesis
Vitamin standards are used for assay and purity testing of nutritional, pharmaceutical and food-fortification products, where the labelled content has to be supported by an analytical value. Several of these compounds are sensitive to light, heat and oxygen, which is why the assigned value and the storage condition belong together in the laboratory's records. Every lot is certified individually, so the figure used in a calculation can be traced to the material actually weighed.
Vitamin A EP Impurity C（Mixture of Z and E Isomers） (CAS 16729-22-9), molecular formula C20H30O and molecular weight 286.45. It is also recorded as 4,14-Retro-retinol; RefChem:284383; all-trans-Retro Retinol. This item is made to order. Tell us the form, the level and the quantity you need, and we will confirm availability, documentation and the shipping condition in the reply.
Part of Vitamin reference standards — 26 items in this group.
Also known as
4,14-Retro-retinol; RefChem:284383; all-trans-Retro Retinol; retro-Vitamin A; Vitamin A EP Impurity C; Retroretinol; Vitamin A EP Impurity C(retro-vitamin A); (6Z,8E,10E,12E)-4,5-Didehydro-5,14-dihydroretinol. Further pharmacopoeial and trivial names are recorded on the certificate of analysis.
Chemical identifiers
- InChIKey
- LWSSYLJSLZBNKE-YIAYGWAFSA-N
- SMILES
- CC\1=CCCC(/C1=C/C=C(\C)/C=C/C=C(\C)/CCO)(C)C
- PubChem CID
- 5378255
- IUPAC name
- (3E,5E,7E,9Z)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-2-en-1-ylidene)nona-3,5,7-trien-1-ol
Identifiers are provided so that this standard can be matched unambiguously against a structure, a database entry or an in-house method file.
Specification
- Catalogue number
- C4X-17793
- CAS number
- 16729-22-9
- Molecular formula
- C20H30O
- Molecular weight
- 286.45
- Appearance
- Orange Semi Solid
- Storage
- -20℃±5℃
- Shipping
- Shipping with Ice Packs
- Country of origin
- China
- Pack sizes
- 10 mg, 25 mg, 50 mg
This is the product specification. Typical purity and assay values are those measured on a released lot and stated on that lot’s certificate of analysis; the certificate for the lot shipped with your order travels with the goods. A specification sheet and a certificate of analysis are different documents and are not interchangeable. A sample certificate can be requested while the batch is being prepared.
Pack sizes and lead time
| Pack size | Availability | Quote |
|---|---|---|
| 10 mg | 10 days | Request quote |
| 25 mg | 10 days | Request quote |
| 50 mg | 8 days | Request quote |
Content and purity for each pack size are stated per lot on the certificate of
analysis. Other pack sizes are available on request. Prices are quoted per enquiry so that pack size, documentation and shipping requirements can be confirmed together — no price is published on this site.
What the documents contain
- Certificate of analysis — issued per lot: catalogue and lot number, the value assigned to the material and the analytical basis for it.
- Safety data sheet — supplied for the catalogue item, and the basis for the transport classification used on the shipment.
- Storage and shipping conditions for this item: -20℃±5℃, Shipping with Ice Packs.
Frequently asked questions
Is a certificate of analysis (COA) available for Vitamin A EP Impurity C（Mixture of Z and E Isomers）?
Yes. A batch-specific COA and the MSDS are issued for every lot of Vitamin A EP Impurity C（Mixture of Z and E Isomers） (catalogue number C4X-17793). Use the COA link on this page, or email chao.lu@cato-chem.com with the lot number printed on your label and we will send the matching document.
What pack sizes and lead times are offered?
Other sizes (10 mg, 25 mg, 50 mg) are quoted with a lead time of approximately 10 days, 8 days.
How is the purity of Vitamin A EP Impurity C（Mixture of Z and E Isomers） documented?
Purity is determined per batch and stated on the certificate of analysis together with the analytical data used for its assignment. If your method requires a specific grade or a particular pharmacopoeial naming, tell us the requirement when you enquire and we will confirm suitability.
Can you supply a larger quantity or a custom synthesis?
Yes. Quantities above the listed pack sizes are quoted on request, and custom synthesis or isolation from related starting materials can be discussed for compounds not held in stock. Contact chao.lu@cato-chem.com with the target quantity and required delivery date.
How is Vitamin A EP Impurity C（Mixture of Z and E Isomers） shipped?
Shipping conditions for this item: Shipping with Ice Packs. Shipments are packed to maintain the specified storage condition, and the SDS is provided for transport classification.
Related products
Same molecular formula (C20H30O)
