2-甲氧基吡嗪

Description

2-methoxypyrazine is identified by CAS 3149-28-8, molecular formula C5H6N2O and molecular weight 110.05 g/mol. UNII RYD35T7F4T; ChEBI 180127; InChIKey WKSXRWSOSLGSTN-UHFFFAOYSA-N. Boiling Point: 60.00 to 61.00 °C. @ 29.00 mm Hg; Boiling Point: 61-62 °C (29 mm Hg); Density: 1.109-1.140.

Identification

CAS Registry Number	3149-28-8
PubChem CID	18467
Molecular formula	C5H6N2O
Molecular weight	110.05 g/mol
IUPAC name	2-methoxypyrazine
InChIKey	WKSXRWSOSLGSTN-UHFFFAOYSA-N
UNII (FDA)	RYD35T7F4T
ChEBI ID	CHEBI:180127
FEMA number	3302
JECFA number	787

Computed Descriptors

Molecular Weight	110.11
XLogP3	0.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	1
Exact Mass	110.048012819
Monoisotopic Mass	110.048012819
Topological Polar Surface Area	35
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Boiling Point	60.00 to 61.00 °C. @ 29.00 mm Hg
Boiling Point	61-62 °C (29 mm Hg)
Density	1.109-1.140
LogP	0.73
Refractive Index	1.492-1.510

Physical description & handling notes

• colourless to light yellow liquid with a nutty, cocoa-like odour
• miscible with water, organic solvents; soluble in oils
• miscible at room temperature (in ethanol)

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Nuts No safety concern at current levels of intake when used as a flavouring agent

GHS Hazard Classification

Reported hazard statements	H302 (98.8%)

Documented Uses

• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index

Synonyms

2-Methoxypyrazine; 3149-28-8; METHOXYPYRAZINE; Pyrazine, methoxy-; Pyrazine, 2-methoxy-; 2-Methoxy-1,4-diazine; FEMA No. 3302; EINECS 221-579-8; RYD35T7F4T; MONOMETHOXYPYRAZINE; METHOXYPYRAZINE [FHFI]; 2-METHOXYPYRAZINE [FCC]; DTXSID4047676; RefChem:474681; DTXCID2027676; 221-579-8

Frequently Asked Questions

What are the CAS number and molecular formula of 2-methoxypyrazine?

CAS 3149-28-8; molecular formula C5H6N2O; molecular weight 110.05 g/mol.

What other names is 2-methoxypyrazine known by?

2-Methoxypyrazine, 3149-28-8, METHOXYPYRAZINE, Pyrazine, methoxy-, Pyrazine, 2-methoxy-, 2-Methoxy-1,4-diazine.

What is the regulatory status of 2-methoxypyrazine?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; Flavoring Agents.

Is 2-methoxypyrazine classified as hazardous?

Hazard statements reported: H302.

What are the key physical properties of 2-methoxypyrazine?

Boiling Point: 60.00 to 61.00 °C. @ 29.00 mm Hg; Boiling Point: 61-62 °C (29 mm Hg); Density: 1.109-1.140; LogP: 0.73.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.