5-METHYLQUINOXALINE
- Product Name
- 5-METHYLQUINOXALINE
- CAS No.
- 13708-12-8
- Chemical Name
- 5-METHYLQUINOXALINE
- Synonyms
- Quinoxaline, 5-methyl-;FEMA 3203;FEMA NUMBER 3203;5-METHYLQUINOXALINE;5-METHYLQUINOXOLINE;5-methyl-quinoxalin;5-Methylquinoxaline>5-Methylquinoxaline,98%;5-METHYLQUINOXALINE 99+%;5 AND 6-METHYLQUINOXALINE
- CBNumber
- CB1170557
- Molecular Formula
- C9H8N2
- Formula Weight
- 144.17
- MOL File
- 13708-12-8.mol
5-METHYLQUINOXALINE Property
- Melting point:
- 20-21 °C (lit.)
- Boiling point:
- 120 °C/15 mmHg (lit.)
- Density
- 1.125 g/mL at 25 °C
- FEMA
- 3203 | 5-METHYLQUINOXALINE
- refractive index
- n20/D 1.62(lit.)
- Flash point:
- >230 °F
- storage temp.
- Sealed in dry,Room Temperature
- pka
- 1.40±0.30(Predicted)
- color
- Light yellow to Yellow to Orange
- Specific Gravity
- 1.112
- Odor
- at 0.10 % in dipropylene glycol. toasted roasted corn nutty coffee burnt
- Odor Type
- nutty
- biological source
- synthetic
- JECFA Number
- 798
- InChIKey
- CQLOYHZZZCWHSG-UHFFFAOYSA-N
- LogP
- 1.76
- CAS DataBase Reference
- 13708-12-8(CAS DataBase Reference)
- EPA Substance Registry System
- Quinoxaline, 5-methyl- (13708-12-8)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- W320307
- Product name
- 5-Methylquinoxaline
- Purity
- ≥99%, FG
- Packaging
- 1 unit
- Price
- $53.48
- Updated
- 2025/07/31
- Product number
- W320307
- Product name
- 5-Methylquinoxaline
- Purity
- ≥99%, FG
- Packaging
- 1 unit
- Price
- $53.48
- Updated
- 2025/07/31
- Product number
- W320307
- Product name
- 5-Methylquinoxaline
- Purity
- ≥99%, FG
- Packaging
- 100g
- Price
- $281
- Updated
- 2025/07/31
- Product number
- W320307
- Product name
- 5-Methylquinoxaline
- Purity
- ≥99%, FG
- Packaging
- 250g
- Price
- $525
- Updated
- 2025/07/31
- Product number
- W320307
- Product name
- 5-Methylquinoxaline
- Purity
- ≥99%, FG
- Packaging
- 1kg
- Price
- $1480
- Updated
- 2025/07/31
5-METHYLQUINOXALINE Chemical Properties,Usage,Production
Description
5-Methylquinoxaline has a burnt, roasted, nutty, roasted com, coffee odor.
Chemical Properties
5-Methylquinoxaline has a burnt, roasted, nutty, roasted corn, coffee odor
Chemical Properties
Amber liquid
Occurrence
Reported found in coffee and roasted almonds
Uses
5-Methylquinoxaline was used in the synthesis of 1,12-diphenyl-5-methyl-1,12,12a,12b-tetrahydrobis[1,2,4]triazolo[4,3-a:3′,4′-c]quinoxaline bis-cycloadducts.
Definition
ChEBI: A quinoxaline derivative in which the quinoxaline (1,4-naphthyridine) skeleton is substituted at C-5 with a methyl group.
Taste threshold values
Taste characteristics at 2 ppm: nutty, roasted, peanut and pyrazine-like with yeasty, corn-chip nuance.
General Description
5-Methylquinoxaline has been identified as one of the key volatile aroma compounds in roasted almonds{170] and roasted coffee.
Synthesis
131543-46-9
2687-25-4
13708-12-8
General method: 2,3-Diaminotoluene (2.0 mmol) was mixed with compound (CAS:131543-46-9, 2.0 mmol) and sulfated polyborate (10 wt%) was added. The reaction mixture was placed in an oil bath and the reaction was stirred at 100 °C. The reaction progress was monitored by thin layer chromatography (TLC). Upon completion of the reaction, the mixture was cooled to room temperature and the reaction was quenched with deionized water. Subsequently, the mixture was filtered or extracted with ethyl acetate (EtOAc) to isolate the product. The crude product can be purified by ethanol recrystallization or by column chromatography using silica gel as stationary phase with ethyl acetate: petroleum ether (EtOAc:pet) as mobile phase. The final product is the known compound 5-methylquinoxaline, which was identified by determining its melting point and 1H NMR and 13C NMR spectra, and the resulting spectral data were confirmed by comparing them with literature values.
References
[1] Journal of Chemical Sciences, 2017, vol. 129, # 2, p. 141 - 148
[2] Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982, p. 357 - 364
[3] Organic Magnetic Resonance, 1980, vol. 14, # 4, p. 300 - 304
[4] Organic Process Research and Development, 2003, vol. 7, # 3, p. 318 - 323
5-METHYLQUINOXALINE Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 5-METHYLQUINOXALINE manufacturers
- Product
- 5-METHYLQUINOXALINE 13708-12-8
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 98.0%
- Supply Ability
- 10000KGS
- Release date
- 2025-06-26
- Product
- 5-Methylquinoxaline 13708-12-8
- Price
- US $50.00/kg
- Min. Order
- 1kg
- Purity
- 99
- Supply Ability
- 5000
- Release date
- 2024-11-18
- Product
- 5-Methylquinoxaline 13708-12-8
- Price
- US $0.00-0.00/kg
- Min. Order
- 1kg
- Purity
- 98%
- Supply Ability
- 1Ton
- Release date
- 2022-09-29