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2,5-Dimethyl pyrazine

2,5-Dimethyl pyrazine Structure
2,5-Dimethyl pyrazine structure
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;KETINE;tomfor;GLYCOLINE
CBNumber:
CB0159355
Molecular Formula:
C6H8N2
Molecular Weight:
108.14
MDL Number:
MFCD00006147
MOL File:
123-32-0.mol
MSDS File:
SDS
Last updated:2024-03-27 13:45:20
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2,5-Dimethyl pyrazine Properties

Melting point 15°C
Boiling point 155 °C (lit.)
Density 0.99 g/mL at 25 °C (lit.)
FEMA 3272 | 2,5-DIMETHYLPYRAZINE
refractive index n20/D 1.502(lit.)
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)
color Clear colorless to pale yellow
Specific Gravity 0.990
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)
Substances Added to Food (formerly EAFUS) 2,5-DIMETHYLPYRAZINE
EWG's Food Scores 1
FDA UNII V99Y0MUY1Q
NIST Chemistry Reference Pyrazine, 2,5-dimethyl-(123-32-0)
EPA Substance Registry System Pyrazine, 2,5-dimethyl- (123-32-0)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P301+P312+P330
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
NFPA 704
2
0

2,5-Dimethyl pyrazine price More Price(55)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 100g $91.8 2024-03-01 Buy
Sigma-Aldrich W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 500g $256 2024-03-01 Buy
Sigma-Aldrich W327204 2,5-Dimethylpyrazine ≥98%, FG 123-32-0 1kg $372 2024-03-01 Buy
Sigma-Aldrich 175420 2,5-Dimethylpyrazine 98% 123-32-0 5g $41.8 2024-03-01 Buy
Sigma-Aldrich 84233 2,5-Dimethylpyrazine analytical standard 123-32-0 1ml $69.7 2022-05-15 Buy
Product number Packaging Price Buy
W327204 100g $91.8 Buy
W327204 500g $256 Buy
W327204 1kg $372 Buy
175420 5g $41.8 Buy
84233 1ml $69.7 Buy

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

Chemical Properties

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

Chemical Properties

clear colorless to pale yellow liquid

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.

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 synthesis

1674-56-2
123-32-0
Synthesis of 2,5-Dimethyl pyrazine from (±)-1-Amino-2-propanol

2,5-Dimethyl pyrazine Preparation Products And Raw materials

Raw materials

Acrolein Pyrazine, 2,5-dimethyl-3-propyl- (8CI,9CI) 2-Methyl-5-sec-butylpyrazine azidoacetone 2,4-OCTADIENE
2-methyl-5-propyl-pyrazine 1,3-OCTADIENE 2-AMINO-2-PROPANOL (E)-2-oxopropanal oxime 2-ISOBUTYL-3-METHYLPYRAZINE
AMINOACETONE HYDROCHLORIDE DL-Alaninol 2,6-Dimethylpiperazine

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Preparation Products

trans-2,5-Dimethylpiperazine 2,6-Dimethylpyrazine Pyrimidine, 2,4-dimethyl- (6CI,7CI,8CI,9CI) Pyrazine-2,5-dicarboxylic acid pyrazine-2,5-dicarbaldehyde

2,5-Dimethyl pyrazine Suppliers

Global( 538)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Mojin Biotechnology Co., Ltd 		+8613288715578 sales@hbmojin.com China 12456 58
Hebei Yanxi Chemical Co., Ltd. 		+8617531190177 peter@yan-xi.com China 5993 58
Shanghai UCHEM Inc. 		+862156762820 +86-13564624040 sales@myuchem.com China 6710 58
Henan Fengda Chemical Co., Ltd 		+86-371-86557731 +86-13613820652 info@fdachem.com China 7845 58
Capot Chemical Co.,Ltd. 		571-85586718 +8613336195806 sales@capotchem.com China 29797 60
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21691 55
Hangzhou FandaChem Co.,Ltd. 		008657128800458; +8615858145714 fandachem@gmail.com China 9348 55
Anhui Royal Chemical Co., Ltd. 		+86-25-86655873 +8613962173137 marketing@royal-chem.com China 142 55
career henan chemical co 		+86-0371-86658258 sales@coreychem.com China 29914 58
Hubei Jusheng Technology Co.,Ltd. 		18871490254 linda@hubeijusheng.com CHINA 28180 58
Supplier Advantage
Hebei Mojin Biotechnology Co., Ltd 		58
Hebei Yanxi Chemical Co., Ltd. 		58
Shanghai UCHEM Inc. 		58
Henan Fengda Chemical Co., Ltd 		58
Capot Chemical Co.,Ltd. 		60
Henan Tianfu Chemical Co.,Ltd. 		55
Hangzhou FandaChem Co.,Ltd. 		55
Anhui Royal Chemical Co., Ltd. 		55
career henan chemical co 		58
Hubei Jusheng Technology Co.,Ltd. 		58

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View Lastest Price from 2,5-Dimethyl pyrazine manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2,5-Dimethyl pyrazine pictures 2024-03-27 2,5-Dimethyl pyrazine
123-32-0
 US $5.00-0.10 / KG 1KG 98% g-kg-tons, free sample is available Henan Fengda Chemical Co., Ltd
2,5-Dimethyl pyrazine pictures 2024-02-24 2,5-Dimethyl pyrazine
123-32-0
 US $50.00-25.00 / kg 1kg 99% 10 tons Hebei Yanxi Chemical Co., Ltd.
2,5-Dimethylpyrazine pictures 2024-02-23 2,5-Dimethylpyrazine
123-32-0
 US $36.00-295.00 / g 5g 0.98 25kg Shanghai UCHEM Inc.

2,5-Dimethyl pyrazine Spectrum

2,5-Dimethyl pyrazine(123-32-0)MS2,5-Dimethyl pyrazine(123-32-0)1HNMR2,5-Dimethyl pyrazine(123-32-0)13CNMR2,5-Dimethyl pyrazine(123-32-0)IR12,5-Dimethyl pyrazine(123-32-0)Raman2,5-Dimethyl pyrazine(123-32-0)ESR

123-32-0(2,5-Dimethyl pyrazine)Related Search:

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Dimethyl sulfate ETHANE Glipizide Dimethyl sulfoxide Dimethyl disulfide
Pyrazine 2,6-Dimethylpyrazine 3-Ethyl-2,5-diMethylpyrazine

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2,5-Dimethylpyrazine (contains 2,6-isomer) 2,5-DIMETHYL PYRAZINE, NATURAL 2,5-Dimethylpyrazine,99% 5-diMethyl pyrazine 2,5-DiMethylpyrazine, 99% 25GR 2,5-DiMethylpyrazine, 99% 5GR 2,5-Dimethylpyrazine, Research grade 2,5-Dimethyl pyrazine >=99.0% 2,5-DIMETHYLPYRAZINE FOR SYNTHESIS 2,5-DiMethyl pyrazzine Natural 2,5-DiMethyl pyrazine 2,5- twoMethyl pyrazine 2,5 AND 2,6-DIMETHYL PYRAZINE 2,5-DIMETHYL-1,4-DIAZINE 2,5-DIMETHYLPYRAZINE AND 2,6-DIMETHYLPYRAZINE 2,5(2,6)-DIMETHYLPYRAZINE MIXTURE 2,5-Dimethyl paradiazine 2 5-DIMETHYLPYRAZINE FCC 2,5-Dimethyl-p-diazine dimethylpyrazine,2,5-dimethylpyrazine,2,5-dimethyl-1,4-diazine KETINE GLYCOLINE FEMA 3272 FEMA NUMBER 3272 FEMA NUMBER 3272 AND 3273 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) tomfor 2,5(or6)-Dimethyl pyrazine 2,5-Dimethylpyrazine 98+% Glipizide Impurity 17 2,5-Dimethylpyrazine > 2,5-Dimethylpyrazine, Flavour grade 2,5-Dimethylpyrazine (contains 2,6-isomer)> 2,5-Dimethyl pyrazine USP/EP/BP 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 2,5-Dimethylprazin 2,5-dimethyl-pyrazin 2,5-DIMETHYLPYRAZINE 2,5-Dimethylpiazine 2,5-Dimethyl Pyrazine,2,5-dimethyl- Structural formula Clomiphene Citrate 50-41-9 Glipizide Impurity 42 123-32-0 123-23-0 3123-32-0 -NCCH3CHNCCH3CH Heterocyclic Building Blocks Pyrazines Mono- & Polyalkylpyrazines Building Blocks