Pharmacopoeial impurityAll-rac-alpha-Tocopherol EP Impurity A (Mixture of Diastereomers)Cat. No. P-T141-002CAS 185672-33-7
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Active ingredient · Tocopherol family
Pharmaceutical analytical standardalpha-Tocopheryl Acetate
Synonyms: All-rac-alpha-Tocopheryl acetate, Alpha-tocopherol acetate, dl-, Tocopheryl Acetate, dl-Alpha, Alpha-tocopheryl acetate, dl-, Tocopheryl acetate, Vitamin E acetate, alpha-tochopheryl acetate, dl-Vitamin E acetate, E-vicotrat, Syntopherol acetate, DL-alpha tocopheryl acetate, Rovimix E 50SD, dl-a-tocopherol acetate, Vitamin E acetate dl-form, Acetic acid alpha-tocopherol, Spondyvit, Epsilan-M, E-Toplex, E-Ferol, alpha-Tocopherol acetate, all rac, a-tocopherol acetate, Vectan, O-Acetyl-alpha-tocopherol, Eusovit, OptoVit E, SynAC, NSC 755840, Vitamine E Acetate, Rovimix E 50, VitaminEacetateoleaginous, Tocopherol Impurity 20, Alpha -tocopherol acetate, DL Acetyl-alpha-Tocopherol, Tocopherol acetate (JP15), Test Product 55059206, All-rac-alfa-tocopheryl acetate, Pharmakon1600-00310040, alpha-tocopherol acetate, all-racemic, alpha-tocopherol acetate, dl-, dl-, dl-, Vitamin E acetate, ((2R*(4R*,8R*))-(+-))-isomer, All-rac-alpha-tocopheryl acetate for peak identification CRS, DL-alpha-Tocopherol acetate, alpha-Tocopheryl acetate CRS
- Cat. No.
- P-T141-015
- CAS
- 7695-91-2
- Alternative CAS
- 52225-20-4 (alternative CAS, same compound)
- Formula
- C31H52O3
- Molecular weight
- 472.75 g/mol
- Category
- Active ingredient (API)
Family: Tocopherol
The main form of vitamin E, a fat-soluble antioxidant that protects cell membranes from free radicals; its existence was deduced in 1922 by Herbert Evans and the molecule was isolated from wheat germ in 1936.
Did you know?Its name comes from the Greek tókos (birth) and phérein (to bear): it was discovered because rats fed without it had no offspring, while wheat germ restored their fertility.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
Pharmacopoeial standards available
The official European Pharmacopoeia standards for this molecule, supplied with EDQM documentation.
- Alpha-Tocopheryl acetate CRSEP T1600000
More products in the Tocopherol family
Pharmacopoeial impurityAll-rac-alpha-Tocopherol EP Impurity A (Mixture of Diastereomers)Cat. No. P-T141-002CAS 185672-33-7
Pharmacopoeial impurityAll-rac-alpha-Tocopherol EP Impurity B (Mixture of Diastereomers)Cat. No. P-T141-003
Pharmacopoeial impurityAll-rac-alpha-Tocopherol EP Impurity C (Mixture of Isomers)Cat. No. P-T141-004CAS 90510-39-7
Pharmacopoeial impurityTocopherol EP Impurity D - (Mixture of Isomers)Cat. No. P-T141-006
Pharmacopoeial impurityTocopheryl Acetate EP Impurity ACat. No. P-T141-007CAS 2714760-45-7
Pharmacopoeial impurityTocopheryl Acetate EP Impurity BCat. No. P-T141-008CAS 1560716-40-6
Isotopically labelledDL-alpha-Tocopherol Nicotinate-d9Cat. No. P-T141-010
Isotopically labelledTocopherol-d6Cat. No. P-T141-011CAS 113892-08-3Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.