2-Propionylthiazole

Description

2-Propionylthiazole is identified by CAS 43039-98-1, molecular formula C6H7NOS and molecular weight 141.03 g/mol. UNII 05CB62UH9K; InChIKey TYRAENAWSLPSLW-UHFFFAOYSA-N. Boiling Point: 95 °C (1 mm Hg); Density: 1.205-1.210; Refractive Index: 1.528-1.533.

Identification

CAS Registry Number	43039-98-1
PubChem CID	65288
Molecular formula	C6H7NOS
Molecular weight	141.03 g/mol
IUPAC name	1-(1,3-thiazol-2-yl)propan-1-one
InChIKey	TYRAENAWSLPSLW-UHFFFAOYSA-N
UNII (FDA)	05CB62UH9K
FEMA number	3611
JECFA number	1042

Computed Descriptors

Molecular Weight	141.19
XLogP3	1.4
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	2
Exact Mass	141.02483502
Monoisotopic Mass	141.02483502
Topological Polar Surface Area	58.2
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	95 °C (1 mm Hg)
Density	1.205-1.210
Refractive Index	1.528-1.533

Physical description & handling notes

• Pale yellow, oily liquid; brown-roasted, vanilla-like odour
• Insoluble in water; Soluble in fats, oils, most organic solvents
• 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 No safety concern at current levels of intake when used as a flavouring agent TRS 913-JECFA 59/65

Documented Uses

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

Synonyms

2-Propionylthiazole; 43039-98-1; 2-Propionyl thiazole; 1-Propanone, 1-(2-thiazolyl)-; Thiazole, 2-propionyl-; 1-(2-Thiazolyl)-1-propanone; Ethyl 2-thiazolyl ketone; FEMA No. 3611; BRN 0507838; 05CB62UH9K; 2-PROPIONYLTHIAZOLE [FHFI]; PROPIONYLTHIAZOLE, 2-; DTXSID90195651; RefChem:483246; DTXCID30118142; 1-(Thiazol-2-yl)propan-1-one

Frequently Asked Questions

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

CAS 43039-98-1; molecular formula C6H7NOS; molecular weight 141.03 g/mol.

What other names is 2-Propionylthiazole known by?

2-Propionylthiazole, 43039-98-1, 2-Propionyl thiazole, 1-Propanone, 1-(2-thiazolyl)-, Thiazole, 2-propionyl-, 1-(2-Thiazolyl)-1-propanone.

What is the regulatory status of 2-Propionylthiazole?

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

What are the key physical properties of 2-Propionylthiazole?

Boiling Point: 95 °C (1 mm Hg); Density: 1.205-1.210; Refractive Index: 1.528-1.533.

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.