(−)-Terpinen-4-ol

CAS 20126-76-5C10H18OChemical Synthesis

(−)-Terpinen-4-ol (CAS 20126-76-5), chemical formula C10H18O, is a chiral monoterpene alcohol with a molecular weight of 154.25 g/mol. It is a key component found in various essential oils, contributing to their characteristic aromas. This compound serves as a valuable chiral building block in organic synthesis and is recognised for its applications in flavour and fragrance industries.

IUPAC: (R)-p-Menth-1-en-4-ol,(R)-1-Isopropyl-4-methyl-3-cyclohexen-1-ol

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(−)-Terpinen-4-ol (C10H18O) — chemical structure, CAS 20126-76-5; Chemistry, fine chemical supplied by Tech Serve Solutions

AlcoholsAsymmetric SynthesisBoswellia carteriiCell BiologyChemical SynthesisChiral Building BlocksEphedra sinicaMelaleuca alternifoliaNutrition ResearchOcimum basil

01 /Applications

Chemical Synthesis

Utilised as a chiral building block in asymmetric synthesis, enabling the stereoselective construction of complex molecules. Its structure makes it a versatile intermediate for developing new chemical entities.

Fragrance and Flavour

Incorporated into fragrance formulations for its characteristic scent profile, and potentially used in flavour compositions where its aroma is desirable. It contributes to the complex scent of natural extracts.

Research and Development

Serves as a research chemical for studies in organic chemistry, medicinal chemistry, and materials science. Its well-defined stereochemistry makes it useful for investigating reaction mechanisms and developing new synthetic methodologies.

02 /Properties

Molecular weight	154.25
Empirical formula	C10H18O
Assay	≥95.0% (sum of enantiomers, GC)
Density	0.934 g/mL at 20 °C
Refractive index	n20/D 1.479
Optical activity	[α]20/D -25±6°, neat
Optical purity	enantiomeric ratio: ~2:1

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	79 °C / 174.2 °F
Transport (UN / ADR)	NA 1993 / PGIII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	22-36/37/38
Safety statements (S)	26

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

20126-76-5

MDL number

MFCD00167108

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is (–)-Terpinen-4-ol used for?

(–)-Terpinen-4-ol is primarily used as a chiral building block in chemical synthesis, particularly in asymmetric synthesis. It also finds applications in the fragrance and flavour industries due to its characteristic aroma, and as a research chemical in various scientific disciplines.

What are the CAS number and formula for (–)-Terpinen-4-ol?

The CAS number for (–)-Terpinen-4-ol is 20126-76-5 and its chemical formula is C10H18O.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies (–)-Terpinen-4-ol with an assay of ≥95.0% (sum of enantiomers, GC). We do not represent this product as USP, BP, or EP grade.

How should (–)-Terpinen-4-ol be handled safely?

Handle (–)-Terpinen-4-ol with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, as it is classified with hazard statements H302 (Harmful if swallowed), H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation).