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224464

Sigma-Aldrich

(1S,2R,5S)-(+)-Menthol

99%

Synonym(s):

(+)-Menthol, (1S,2R,5S)-2-Isopropyl-5-methylcyclohexanol

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About This Item

Empirical Formula (Hill Notation):
C10H20O
CAS Number:
Molecular Weight:
156.27
Beilstein:
1902292
EC Number:
MDL number:
UNSPSC Code:
12352212
PubChem Substance ID:
NACRES:
NA.22

vapor pressure

0.8 mmHg ( 20 °C)

Quality Level

Assay

99%

form

solid

optical activity

[α]23/D +48°, c = 10 in ethanol

optical purity

ee: 96% (GLC)

bp

103-104 °C/9 mmHg (lit.)

mp

43-44 °C (lit.)

functional group

hydroxyl

SMILES string

CC(C)[C@H]1CC[C@H](C)C[C@@H]1O

InChI

1S/C10H20O/c1-7(2)9-5-4-8(3)6-10(9)11/h7-11H,4-6H2,1-3H3/t8-,9+,10-/m0/s1

InChI key

NOOLISFMXDJSKH-AEJSXWLSSA-N

Gene Information

human ... UGT1A4(54657)

General description

(1S,2R,5S)-(+)-menthol is a chiral secondary alcohol. Its alcohol group can be protected as 2-tetrahydrofuranyl ether by reacting with bromotrichloromethane and tetrahydrofuran.

Application

(1S,2R,5S)-(+)-menthol can undergo acylation with acid anhydrides in the presence of trimethylsilyl trifluoromethanesulfonate to form the corresponding acylated products.

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

213.8 °F - closed cup

Flash Point(C)

101 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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An efficient and extremely mild method for protecting alcohols as 2-tetrahydrofuranyl ethers.
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Tetrahedron Letters, 41(32), 6249-6252 (2000)
An extremely powerful acylation reaction of alcohols with acid anhydrides catalyzed by trimethylsilyl trifluoromethanesulfonate.
Procopiou PA, et al.
The Journal of Organic Chemistry, 63(7), 2342-2347 (1998)
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Menthol, which creates mint flavor and scent, is often added to tobacco in both menthol and nonmenthol cigarettes. A potent tobacco carcinogen, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), is extensively metabolized to its equally carcinogenic metabolite 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) as (R)- or (S)-NNAL enantiomers. NNAL

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