2,5-Dimethyl pyrazine

Product Name: 2,5-Dimethyl pyrazine
CAS No.: 123-32-0
Chemical Name: 2,5-Dimethyl pyrazine
Synonyms: 2,5-DIMETHYLPYRAZINE;2,5-Dimethylprazin;Pyrazine,2,5-dimethyl-;2,5-Dimethyl;Structural formula;2,5-Dimethylpiazine;2,5-dimethyl-pyrazin;tomfor;KETINE;GLYCOLINE
CBNumber: CB0159355
Molecular Formula: C6H8N2
Formula Weight: 108.14
MOL File: 123-32-0.mol

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2,5-Dimethyl pyrazine Property

Melting point:: 15°C
Boiling point:: 155 °C (lit.)
Density: 0.99 g/mL at 25 °C (lit.)
refractive index: n20/D 1.502(lit.)
FEMA: 3272 | 2,5-DIMETHYLPYRAZINE
Flash point:: 147 °F
storage temp.: Inert atmosphere,Room Temperature
solubility: Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form: Liquid
pka: 2.21±0.10(Predicted)
Specific Gravity: 0.990
color: Clear colorless to pale yellow
PH: 7 (H2O)
Odor: at 0.10 % in dipropylene glycol. nutty roasted baked potato
Odor Type: chocolate
Sensitive: Hygroscopic
JECFA Number: 766
BRN: 107052
Dielectric constant: 2.4399999999999999
LogP: 0.64
CAS DataBase Reference: 123-32-0(CAS DataBase Reference)
NIST Chemistry Reference: Pyrazine, 2,5-dimethyl-(123-32-0)
EPA Substance Registry System: Pyrazine, 2,5-dimethyl- (123-32-0)

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Safety

Hazard Codes: Xn,Xi
Risk Statements: 22-36/37/38-R22
Safety Statements: 26-36
RIDADR: NA 1993 / PGIII
WGK Germany: 3
RTECS: UQ2800000
Hazard Note: Irritant
TSCA: Yes
HS Code: 29339990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word: Warning
Hazard statements: H302Harmful if swallowed

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: W327204
Product name: 2,5-Dimethylpyrazine
Purity: ≥98%, FG
Packaging: 100g
Price: $91.8
Updated: 2024/03/01

Sigma-Aldrich

Product number: W327204
Product name: 2,5-Dimethylpyrazine
Purity: ≥98%, FG
Packaging: 500g
Price: $256
Updated: 2024/03/01

Sigma-Aldrich

Product number: W327204
Product name: 2,5-Dimethylpyrazine
Purity: ≥98%, FG
Packaging: 1kg
Price: $372
Updated: 2024/03/01

Sigma-Aldrich

Product number: 175420
Product name: 2,5-Dimethylpyrazine
Purity: 98%
Packaging: 5g
Price: $41.8
Updated: 2024/03/01

Sigma-Aldrich

Product number: 84233
Product name: 2,5-Dimethylpyrazine
Purity: analytical standard
Packaging: 1ml
Price: $69.7
Updated: 2022/05/15

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2,5-Dimethyl pyrazine Chemical Properties,Usage,Production

Chemical Properties

clear colorless to pale yellow liquid

Chemical Properties

2,5-Dimethylpyrazine has a characteristic odor of earthy, potato-like odor.

Occurrence

Reported to be present in bakery products, roasted barley, cocoa products, roasted coffee, dairy products, pork, peanuts, pecans, filberts, popcorn, potato products, rum and whiskey, soy products; a volatile component in roasted filberts and in potato chips; reportedly identified in the fat of cooked beef; also reported found in toasted off-flavors. Also reported in cheeses, butter, boiled eggs, grilled beef, tea, barley, oats, oatmeal, soybeans, heated beans, kohlrabi, shrimp and mushrooms. Also reported found in coffee, potato chips and shrimp

Uses

2,5-Dimethylpyrazine is used as a reagent in the synthesis of bone-targeted proteasome inhibitors for multiple myeloma (MM). 2,5-Dimethylpyrazine is also used in the preparation of 3-Methyl-2,5-bis-(2-hydroxyethyl)pyrazine (M295340); a degredation product of Clavulanic Acid (C563750) which is a β-lactamase inhibitor, typically added to amoxicillin to increase its effectiveness.

Uses

2,5-Dimethyl pyrazine is used for blending food, nuts and beverage flavors.

Application

2,5-Dimethyl pyrazine is held chiefly responsible for the typical flavor of Potato Chips (oil-fried, thin-sliced Potato). It has therefore been manufactured synthetically and is used in the reconditioning of commercial products, such as Potato Chips and the packaging material for same, and also for reconditioning of "instant" coffee.

Definition

ChEBI: 2,5-Dimethylpyrazine is a member of pyrazines.

Preparation

By the interaction of acrolein and ammonia when heated in glycerol in the presence of ammonium salts; by self-condensation of aminoacetone, followed by oxidation with mercury chloride.

Aroma threshold values

Detection: 80 ppb to 1.8 ppm

Taste threshold values

Taste characteristics at 7.5 ppm: musty, potato, cocoa and nutty with a fatty and oily nuance

General Description

2,5-Dimethylpyrazine is a pyrazine compound that is mainly formed in food products such as cooked rice or roasted peanuts due to the Maillard reaction between sugars and proteins during cooking or roasting process.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx

Purification Methods

Purify it via its picrate (m 150o) which is decomposed with a base (e,g, KOH) and distilled. [Wiggins and Wise J Chem Soc 4780 1956]. [Beilstein 23/5 V 403.]

2,5-Dimethyl pyrazine Preparation Products And Raw materials

Raw materials

Acrolein

Preparation Products

trans-2,5-Dimethylpiperazine 2,6-Dimethylpyrazine

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2,5-Dimethyl pyrazine Suppliers

Americas 1 Belgium 2 China 407 Europe 3 France 1 Germany 6 India 11 Ireland 1 Japan 8 Norway 1 Singapore 1 Slovakia 1 South Korea 2 Spain 2 Switzerland 2 The Netherlands 1 United Kingdom 20 United States 84 USA 1 Global 556

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View Lastest Price from 2,5-Dimethyl pyrazine manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd

Product: 2,5-Dimethyl pyrazine 123-32-0
Price: US $10.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20ton
Release date: 2024-05-31

Shandong Deshang Chemical Co., Ltd.

Product: 2,5-Dimethyl pyrazine 123-32-0
Price: US $10.00-7.00/kg
Min. Order: 1kg
Purity: 99.99%
Supply Ability: 10 tons
Release date: 2024-06-05

Shandong Deshang Chemical Co., Ltd.

Product: 2,5-Dimethyl pyrazine 123-32-0
Price: US $10.00-7.00/kg
Min. Order: 1kg
Purity: 99.99%
Supply Ability: 10 tons
Release date: 2024-06-13

123-32-0, 2,5-Dimethyl pyrazineRelated Search:

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2,5-Dimethylprazin

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tomfor

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2,5-Dimethylpiazine

dimethylpyrazine,2,5-dimethylpyrazine,2,5-dimethyl-1,4-diazine

2,5-Dimethyl

Pyrazine,2,5-dimethyl-

KETINE

GLYCOLINE

FEMA 3272

FEMA NUMBER 3272

FEMA NUMBER 3272 AND 3273

2,5(or6)-Dimethyl pyrazine

2,5-DIMETHYLPYRAZINE (CONTAINS CA. 5% 2,6-ISOMER) 94+%

2,5-DIMETHYL PYRAZINE FEMA NO.3272

2,5-DIMETHYLPYRAZINE (CONTAINS 2,6-ISOMER) 80+%

2,3,5-TRMETHYLPYRAZINE

2,5-Dimethylpyrazine≥ 99% (GC)

2,5-Dimethylpyrazine 98+%

Glipizide Impurity 17

2,5-Dimethylpyrazine &gt

2,5-Dimethylpyrazine, Flavour grade

2,5-Dimethylpyrazine (contains 2,6-isomer)&gt

2,5-Dimethyl pyrazine USP/EP/BP

Structural formula

2,5-dimethyl pyrazine and 2,6-dimethyl pyrazine mixture

2, 5-Dimethyl Pyrazine CAS 123-32-0 with Best Price

2.5-Dimethyl pryazine

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Glipizide Impurity 42

2,5-Dimethylpyrazine, Flavour grade in isooctane

2,5-Dimethylpyrazine, Research grade in isooctane

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