MilliporeSigma
All Photos(1)

W320307

Sigma-Aldrich

5-Methylquinoxaline

≥99%, FG

Synonym(s):
Nutty oxaline
Empirical Formula (Hill Notation):
C9H8N2
CAS Number:
Molecular Weight:
144.17
FEMA Number:
3203
EC Number:
Council of Europe no.:
2271
MDL number:
PubChem Substance ID:
Flavis number:
14.028
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FDA 21 CFR 110

Assay

≥99%

refractive index

n20/D 1.62 (lit.)

bp

120 °C/15 mmHg (lit.)

mp

20-21 °C (lit.)

density

1.125 g/mL at 25 °C

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

burnt; coffee; corn; nutty; roasted

SMILES string

Cc1cccc2nccnc12

InChI

1S/C9H8N2/c1-7-3-2-4-8-9(7)11-6-5-10-8/h2-6H,1H3

InChI key

CQLOYHZZZCWHSG-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
W274402W332100W511609
5-Methylquinoxaline ≥99%, FG

Sigma-Aldrich

W320307

5-Methylquinoxaline

6-Methylquinoline ≥98%, FG

Sigma-Aldrich

W274402

6-Methylquinoline

2-Methylquinoxaline ≥97%

Sigma-Aldrich

W511609

2-Methylquinoxaline

grade

FG, Fragrance grade, Halal, Kosher

grade

FG, Halal

grade

FG, Fragrance grade, Halal, Kosher

grade

-

agency

follows IFRA guidelines, meets purity specifications of JECFA

agency

meets purity specifications of JECFA

agency

follows IFRA guidelines

agency

-

assay

≥99%

assay

≥98%

assay

≥97%

assay

≥97%

refractive index

n20/D 1.62 (lit.)

refractive index

n20/D 1.614 (lit.)

refractive index

n20/D 1.542 (lit.)

refractive index

n20/D 1.613 (lit.)

bp

120 °C/15 mmHg (lit.)

bp

256-260 °C (lit.)

bp

85 °C/3 mmHg (lit.)

bp

245-247 °C (lit.)

General description

5-Methylquinoxaline has been identified as one of the key volatile aroma compounds in roasted almonds{170] and roasted coffee.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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

Customers Also Viewed

Slide 1 of 9

1 of 9

3-Ethylpyridine ≥98%, FG

Sigma-Aldrich

W339407

3-Ethylpyridine

Ethyl laurate ≥98%, FCC, FG

Sigma-Aldrich

W244104

Ethyl laurate

2-Nonanone ≥99%, FCC, FG

Sigma-Aldrich

W278505

2-Nonanone

Decanoic acid ≥99.5%, FCC, FG

Sigma-Aldrich

W236403

Decanoic acid

Pyruvic acid ≥97%, FG

Sigma-Aldrich

W297003

Pyruvic acid

Volatile components of roasted almonds: basic fraction.
Takei Y, et al.
Agricultural and Biological Chemistry, 38(3), 645-648 (1974)
Isolation and determination of ?-dicarbonyl compounds by RP-HPLC-DAD in green and roasted coffee
Daglia M, et al.
Journal of Agricultural and Food Chemistry, 55(22), 8877-8882 (2007)
Weerachat Sompong et al.
BMC complementary and alternative medicine, 15, 394-394 (2015-11-02)
Methylglyoxal (MG) is one of the most reactive glycating agents, which result the formation of advanced glycation end-products (AGEs) that have been implicated in the progression of age-related diseases. Inhibition of MG-induced AGE formation is the imperative approach for alleviating

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