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W331007

Sigma-Aldrich

Methyl thiobutyrate

≥97%, FG

Synonym(s):

S-Methyl thiobutanoate, S-Methyl thiobutyrate

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About This Item

Linear Formula:
CH3CH2CH2COSCH3
CAS Number:
Molecular Weight:
118.20
FEMA Number:
3310
EC Number:
Council of Europe no.:
2328
MDL number:
UNSPSC Code:
12164502
PubChem Substance ID:
Flavis number:
12.032
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002

Assay

≥97%

refractive index

n20/D 1.461 (lit.)

bp

142-143 °C/757 mmHg (lit.)

density

0.966 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

cheese; musty; sulfurous

SMILES string

CCCC(=O)SC

InChI

1S/C5H10OS/c1-3-4-5(6)7-2/h3-4H2,1-2H3

InChI key

GRLJIIJNZJVMGP-UHFFFAOYSA-N

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Application


  • RIFM fragrance ingredient safety assessment, methyl thiobutyrate, CAS Registry Number 2432-51-1.: This study reviews the safety of methyl thiobutyrate as a fragrance ingredient, evaluating its toxicity and potential effects in various applications (Api et al., 2020).

  • Carboxylesterase activity, cDNA sequence, and gene expression in malathion susceptible and resistant strains of the cotton aphid, Aphis gossypii.: The study examines the role of carboxylesterases in pesticide resistance, with methyl thiobutyrate used to characterize enzyme activity (Pan et al., 2009).

  • Odorant and pheromone binding by aphrodisin, a hamster aphrodisiac protein.: Research on aphrodisin′s binding properties includes the evaluation of methyl thiobutyrate as a potential ligand, contributing to the understanding of pheromone signaling mechanisms (Briand et al., 2000).

Pictograms

FlameExclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

93.2 °F - closed cup

Flash Point(C)

34 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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A G Singer et al.
Physiology & behavior, 30(1), 139-143 (1983-01-01)
A volatile sulfur-containing compound that is characteristic of estrous (Day 1) hamster vaginal discharge has been identified as methyl thiolbutyrate (MTB). From numerous measurements of MTB concentration on each day of the estrous cycle, it is clear that this compound

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