Merck
CN
All Photos(1)

Documents

Safety Information

W439400

Sigma-Aldrich

2,4,5-Trimethyloxazole

99%, FG

Sign Into View Organizational & Contract Pricing
All Photos(1)
Synonym(s):
Trimethyloxazole
Empirical Formula (Hill Notation):
C6H9NO
CAS Number:
20662-84-4
Molecular Weight:
111.14
FEMA Number:
4394
EC Number:
243-952-4
MDL number:
MFCD00005308
PubChem Substance ID:
329830710
Flavis number:
13.169
NACRES:
NA.21

biological source

synthetic

Quality Level

400

grade

FG

reg. compliance

EU Regulation 1334/2008 & 872/2012

Assay

99%

refractive index

n20/D 1.442 (lit.)

bp

133-134 °C/760 mmHg (lit.)

density

0.957 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

Organoleptic

green; nutty; sweet

SMILES string

Cc1nc(C)c(C)o1

InChI

1S/C6H9NO/c1-4-5(2)8-6(3)7-4/h1-3H3

InChI key

ZRLDBDZSLLGDOX-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

2,4,5-Trimethyloxazole is an important heterocyclic flavor compound that generally occurs in coffee and cocoa. It is reported to be present in meat and roasted peanuts due to its formation by the reaction between 2,3-butanedione and alanine or cysteine due to Strecker′s degradation.

Application

Possible applications: Chocolate, Dutch cocoa, coffee, various savory meaty flavors, malt and toasted bread.

Biochem/physiol Actions

Odor at 1.0%: Slight pyridine-like, roasted vegetative, toasted Dutched cocoa background with a slight nutty nuance.
Taste at 1ppm: Sweet roasted cocoa, coffee, chocolate, slightly seared savory beef, proteinous with green vegetative nuances.

Other Notes

Natural occurrence: Heated beef, cocoa, cooked pork, French fries, autolyzed yeast, cooked egg and fried chicken.

Pictograms

Flame
GHS02

Signal Word

Warning

Hazard Statements

H226

Hazard Classifications

Flam. Liq. 3

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

91.4 °F - closed cup

Flash Point(C)

33 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Formation of oxazolines and oxazoles in Strecker degradation of DL-alanine and L-cysteine with 2, 3-butanedione.
Ho CT & Hartman GJ.
Journal of Agricultural and Food Chemistry, 30(4), 793-794 (1982)
Oxazoles and oxazolines in foods.
Maga JA.
Journal of Agricultural and Food Chemistry, 26(5), 1049-1050 (1978)
Gerard Mosciano
Perfumer & Flavorist, 34 (1), 58-59 (2009)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service