2-acetyl-2-thiazoline

Description

2-acetyl-2-thiazoline is identified by CAS 29926-41-8, molecular formula C5H7NOS and molecular weight 129.02 g/mol. UNII TI3K1Q5Y1T; ChEBI 89714; InChIKey FZOZFDAMVVEZSJ-UHFFFAOYSA-N. Boiling Point: 222.00 to 223.00 °C. @ 760.00 mm Hg; Melting Point: 25 - 26 °C; LogP: -0.890.

Identification

CAS Registry Number	29926-41-8
PubChem CID	169110
Molecular formula	C5H7NOS
Molecular weight	129.02 g/mol
IUPAC name	1-(4,5-dihydro-1,3-thiazol-2-yl)ethanone
InChIKey	FZOZFDAMVVEZSJ-UHFFFAOYSA-N
UNII (FDA)	TI3K1Q5Y1T
ChEBI ID	CHEBI:89714
FEMA number	3817
JECFA number	1759

Computed Descriptors

Molecular Weight	129.18
XLogP3	0.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	1
Exact Mass	129.02483502
Monoisotopic Mass	129.02483502
Topological Polar Surface Area	54.7
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Boiling Point	222.00 to 223.00 °C. @ 760.00 mm Hg
Melting Point	25 - 26 °C
LogP	-0.890

Physical description & handling notes

• Solid
• Brown solid; Green, onion, herbal, grassy aroma
• Insoluble in water and heptane
• Soluble (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 Caramel, Popcorn, Roast No safety concern at current levels of intake when used as a flavouring agent
GHS notification summary	0.6% (1 / 156)

GHS Hazard Classification

GHS notification summary	0.6% (1 / 156)
Reported hazard statements	H301 (25.6%), H302 (73.7%), H319 (99.4%)

Documented Uses

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

Synonyms

2-Acetyl-2-thiazoline; 29926-41-8; 1-(4,5-Dihydro-1,3-thiazol-2-yl)ethanone; Ethanone, 1-(4,5-dihydro-2-thiazolyl)-; TI3K1Q5Y1T; FEMA NO. 3817; DTXSID60184037; RefChem:84966; DTXCID70106528; 629-682-3; 1-(4,5-dihydrothiazol-2-yl)ethanone; 2-acetylthiazoline; 2-Acetyl-4,5-dihydrothiazole; 1-(4,5-dihydro-1,3-thiazol-2-yl)ethan-1-one; 2-Thiazoline, 2-acetyl; MFCD00209496

Frequently Asked Questions

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

CAS 29926-41-8; molecular formula C5H7NOS; molecular weight 129.02 g/mol.

What other names is 2-acetyl-2-thiazoline known by?

2-Acetyl-2-thiazoline, 29926-41-8, 1-(4,5-Dihydro-1,3-thiazol-2-yl)ethanone, Ethanone, 1-(4,5-dihydro-2-thiazolyl)-, TI3K1Q5Y1T, FEMA NO. 3817.

What is the regulatory status of 2-acetyl-2-thiazoline?

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

Is 2-acetyl-2-thiazoline classified as hazardous?

0.6% of GHS notifications report no hazard classification (1 of 156).

What are the key physical properties of 2-acetyl-2-thiazoline?

Boiling Point: 222.00 to 223.00 °C. @ 760.00 mm Hg; Melting Point: 25 - 26 °C; LogP: -0.890.

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.