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메틸피라진

2-Methylpyrazine

HCID 7976
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기본 정보개요이름 및 식별자물성안전 및 규제화학 및 산업관련 반응화합물 노트
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기본 정보

CAS
109-08-0
표준 SMILES
Cc1cnccn1
InChIKey
CAWHJQAVHZEVTJ-UHFFFAOYSA-N
분자식
C5H6N2
평균 분자량
94.11 g/mol
단동위원소 질량
94.0530982

개요

Methylpyrazine is a member of the class of pyrazines that is pyrazine in which one of the hydrogens is replaced by a methyl group. It is a flavouring agent found in coffee, peanuts and red peppers. It has a role as a flavouring agent, a plant metabolite and a Maillard reaction product.

이름 및 식별자

우선 이름
2-Methylpyrazine
IUPAC
2-methylpyrazine
현지명
메틸피라진
영어명
2-Methylpyrazine
분자식
C5H6N2
분자량
94.11

이름 및 동의어

2-METHYLPYRAZINE109-08-0MethylpyrazinePyrazine, methyl-Pyrazine, 2-methyl-2-Methyl-1,4-diazine2-methyl-pyrazineFEMA No. 3309methyl-pyrazineDTXSID4047620pyrazine, 2-methylRVC6500U9C
이름 더 보기
2-메틸피라진메틸피라진2-메틸-피라진FEMA 3309methyl-pyrazin3-MethylpyrazineMETHYLPYRAZINE, 2-MPZFEMA 3616Methylpiazine
NSC-30412NSC-49138CHEBI:89015RefChem:1113273203-645-8methyl pyrazine5-methylpyrazinemonomethylpyrazine

데이터베이스 식별자

CAS
109-08-0
PubChem CID
7976
DTXSID
DTXSID4047620
ChEMBL
CHEMBL479791
ChEBI
CHEBI:89015
UNII
RVC6500U9C
EC Number
203-645-8
Nikkaji
J1.501F

물성

구조 계산 물성보충 중

XLogP
0.2
극성 표면적
25.8 Ų
수소 결합 공여자 수
0
수소 결합 수용자 수
2
회전 가능 결합 수
0
무거운 원자 수
7
형식 전하
0
복잡도
54

실험 및 물리화학적 성질

Chemical ClassesNitrogen Compounds -> Pyrazines
SpringerMaterials Properties15N nuclear magnetic resonance spectrum
FragrancesFragrance Ingredient (2-Methylpyrazine) -> IFRA transparency List
LogP · 2건

0.21

0.23

Food AdditivesFLAVORING AGENT OR ADJUVANT -> FDA Substance added to food
Density1.007-1.033
Flavoring AgentsEU Flavoring substances
Solubility · 3건

1000 mg/mL at 20 °C

soluble in water and oils

miscible at room temperature (in ethanol)

Boiling Point · 2건

135.00 °C. @ 761.00 mm Hg

137 °C

Melting Point-29 °C
Refractive Index1.501-1.509

안전 및 규제

안전 정보는 참고용이며, 공급업체의 물질안전보건자료(SDS), 관련 법규 및 전문가 평가를 대체하지 않습니다.

GHS 분류

GHS Classification · 6건

Warning

H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]

P210, P233, P240, P241, P242, P243, P264, P270, P280, P301+P317, P303+P361+P353, P330, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 1659 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Warning

H226: Flammable liquid and vapor [Warning Flammable liquids]

유해성 정보

Regulatory Information · 3건

Chemical: Pyrazine, methyl-

Regulation (EC) No 1831/2003 (amended)

2-Methylpyrazine: Does not have an individual approval but may be used under an appropriate group standard

Hazards SummarySafe when used as a flavoring agent in food; [JECFA] An irritant; Harmful by ingestion; [Alfa Aesar MSDS]
Hazard Classes and Categories · 2건

Flam. Liq. 3 (100%)

Flammable liquids - Category 3

안전 데이터

wgk
3
tsca
TSCA listed
rtecs
UQ3675000
ridadr
UN 1993 3/PG 3
독성
mouse,LD50,intraperitoneal,1820mg/kg (1820mg/kg),Toxicology and Applied Pharmacology. Vol. 17, Pg. 244, 1970.
HS 번호
29339990
risk_code
10-22-36/37/38
hazard_code
Xn,Xi,F
safety_code
26-36-16

화학 및 산업

약리 정보

Cellular LocationsCytoplasm

용도 및 제조

UsesUsed as flavoring agent or adjuvant; [FDA]
Use Classification · 4건

Fragrance Ingredients

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

Flavoring Agents -> JECFA Flavorings Index

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

General Manufacturing InformationPyrazine, 2-methyl-: ACTIVE
응용 분야 · 4건

개요2-Methylpyrazine has an odor threshold in water variously reported at 60,000 or 105,000 ppb. May be prepared from the corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine.

출처Reported found in bakery products, roasted barley, cocoa products, coffee, dairy products, cooked meats, peanuts, filberts, pecans, popcorn, potato chips, rum and whiskey, soy product, roasted filberts, roasted almonds, guava, papaya, asparagus, kohlrabi, baked and fried potato, milk, boiled egg, smoked fish, beer, coffee, sesame seed, rice, sukiyaki, buckwheat, sweet corn, corn tortillas, malt, wort, wild rice, okra, crayfish, clam, squid and maté.

용도2-Methylpyrazine is used as flavoring agents in bread fresh bread, butter, chocolate, chocolate cocoa, coffee, meat roasted, nut almond.

일반 설명2-Methylpyrazine is an alkyl-substituted pyrazine used as a key intermediate in the synthesis of pyrazineamide, an anti-tubercular drug.

제조 방법

From corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine

관련 반응

36건
반응 기록 만들기
HRID 100702 반응식
HRID 100702반응물로Training data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 273056 반응식
HRID 273056반응물로uspto-grants-2008_11
HRID 401160 반응식
HRID 401160반응물로uspto-grants-2014_06
HRID 457707 반응식
HRID 457707반응물로uspto-grants-2007_03
HRID 486480 반응식
HRID 486480반응물로uspto-grants-1994_03
HRID 548998 반응식
HRID 548998반응물로uspto-grants-2011_05
HRID 549069 반응식
HRID 549069반응물로uspto-grants-2011_05
HRID 716478 반응식
HRID 716478반응물로uspto-grants-2015_11
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Physical Description · 3건

Colorless liquid; [Alfa Aesar MSDS]

Liquid

colourless to slightly yellow liquid with a nutty, cocoa-like odour

물리화학적 성질

녹는점
-29 °C · -29 °C (lit.)
끓는 점
135 °C/761 · 135 °C/761 mmHg (lit.)
밀도
1.03 g/mL · 1.03 g/mL at 25 °C (lit.)
굴절률
20 · n20/D 1.504(lit.)
FEMA
3309 · 3309 | 2-METHYLPYRAZINE
인화점
122 °F · 122 °F
저장 조건
2 · 2-8°C
용해도
20.87 mg/mL · >20.87 mg/mL in EtOH with ultrasonic; >49.9 mg/mL in DMSO;
물리적 상태
액체
산도 계수 (pKa)
1.45 · 1.45(at 27℃)
색상
무색투명~미황색
냄새
1 % · 디프로필렌 글리콜 중 1.00%. 열매가 많은 코코아 구운 초콜릿 땅콩 그린
냄새 유형
견과류
생물학적 소스
synthetic
수용성
물에 완전히 섞임.
JECFA Number
761 · 761
BRN
105778 · 105778
Henry's Law Constant
4.5 · 4.5×100 mol/(m3Pa) at 25℃, Buttery et al. (1971)
주요 응용
향료 및 향
InChI
1S/C5H6N2/c1-5-4-6-2-3-7-5/h2-4H,1H3
InChIKey
CAWHJQAVHZEVTJ-UHFFFAOYSA-N
SMILES
Cc1cnccn1
LogP
0.18 · 0.18
NIST
Pyrazine, methyl-(109-08-0)
EPA
Pyrazine, methyl- (109-08-0)

화학적 성질

2-Methylpyrazine has a nutty, cocoa, green, roasted, chocolate, meaty odor.

포장분류
III
위험 등급
3
기존화학 물질
KE-25312
Hazard Classifications
Acute Tox. 4 OralFlam. Liq. 3
스토리지 클래스
3 - Flammable liquids

상·하류 제품 정보

상류 원료

메틸 글리옥살에틸렌디아민2-MethylpiperazinePyrazine, 2,3-dimethyl-5-(1Z)-1-propen-1-yl-Pyrazine, 3,5-dimethyl-2-(1Z)-1-propen-1-yl-3-Ethyl-2,5-diMethylpyrazine3,5-DIMETHYL-2-ETHYLPYRAZINE에틸(2-)-3-메틸피라지온2,3-디메틸피라진2,3,5-트리메틸피라진

하류 제품

테트라메틸피라진5-Methyl-2-pyrazinecarboxylic acid모르폴린2-Phenethylpyrazine1-페닐-2-피라진-2-일레탄온피라진-2-일-아세트산에틸에스테르