Active ingredient · Levomenthol family
Pharmaceutical analytical standardLevomenthol
Synonyms: l-Menthol, U.S.P. Menthol, D-(-)-Menthol, Levomentol, Menthol, (1R,3R,4S)-(-)-, NSC 62788, FEMA NO. 2665, (-)-, Levomentolo, Freegells Cough Drops Menthol 30ct, Freegells Cough Drops Menthol 80ct, Cough Drops Freegells Strawberry 30ct, Cough Drops Dollar General Cherry 30ct, Freegells Cough Drops Honey Lemon 30ct, Cough Drops Dollar General Menthol 30ct, Cough Drops Dollar General Menthol 80ct, Cough Drops Dollar General Cherry 200ct, Freegells Cough Drops Honey Lemon 200ct, Menthol Drops Dollar General Severe 45ct, Cough Drops Dollar General Menthol 160ct, Freegells Cough Drops Menthol Cherry 30ct, Freegells Cough Drops Menthol Cherry 80ct, Cough Drops Dollar General Strawberry 30ct, Cough Drops Dollar General Honey Lemon 30ct, Cough Drops Dollar General Honey Lemon 200ct, Menthol Drops Dollar General Severe Honey Lemon 45ct, Menthacamphor, Menthomenthol, Peppermint camphor, Racementhol, Hexahydrothymol, d,l-Menthol, rac-Menthol, Cyclohexanol, 5-methyl-2-(1-methylethyl)-, (1R,2S,5R)-, Menthol(-), Menthol, dl-, Cyclohexanol, 5-methyl-2-(1-methylethyl)-, (1R,2S,5R)-rel-, Racementol, Racemic menthol, Water-soluble menthol, Menthol natural, NSC 2603, Headache crystals, Racementholum, Thymomenthol, Menthol, cis-1,3,trans-1,4-, l-Menthol (natural), I-menthol, Menthol racemique, Menthol natural, brazilian, Menthol, l-, Menthol racemate, Tra-kill tracheal mite killer, Meggezone, Cyclohexanol, 5-methyl-2-(1-methylethyl)-, (1alpha,2beta,5alpha)-, Cyclohexanol, 5-methyl-2-(1-methylethyl)-, (1R-(1alpha,2beta,5alpha))-, Menthol CRS, Cyclohexanol, 5-m, l-mentholum, Natural menthol crystal, l-Menthol (JP18), Menthol,3,trans-1,4-, Cyclohexanol, 5-methyl-2-(1-methylethyl)-, (1R,3R,4S)-, Pharmakon1600-01503134, Cyclohexanol, 2-isopropyl-5-methyl-, NSC 758395, Menthol (racemic) 100 microg/mL in Methanol, Cyclohexanol, (1alpha,2beta,5alpha)-
- Cat. No.
- P-L053-001
- CAS
- 2216-51-5
- Alternative CAS
- 19321-38-1 (sodium salt)
- 89-78-1 (alternative CAS, same compound)
- 98167-53-4 (alternative CAS, same compound)
- 114376-98-6 (alternative CAS, same compound)
- Formula
- C10H20O
- Molecular weight
- 156.27 g/mol
- Category
- Active ingredient (API)
(-)-Menthol, the form of menthol found in mint oils: a monoterpene obtained mainly from Mentha arvensis, first isolated in 1771 by Hieronymus David Gaubius and used in throat lozenges, topical pain relievers and flavourings.
Did you know?Its cooling feel is a chemical trick: it triggers the TRPM8 cold receptor in the skin. About 3,000 tonnes a year are made through an asymmetric synthesis devised by the team of Nobel laureate Ryōji Noyori.
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
Shipped under controlled temperature when the molecule requires it.
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Sent with every order.
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.
- LevomentholBP 772
Frequently 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.