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Carboxylic acids and anhydrides

S-Methylthiolactic acid

Also known as 2-(methylthio)propanoic acid, 2-(Methylthio)propionic acid, propanoic acid, 2-(methylthio)-

CAS 58809-73-7Formula C4H8O2SMolar mass 120.17 g/molEC 251-399-5
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S-Methylthiolactic acid chemical structure, C4H8O2S, CAS 58809-73-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
58809-73-7
Formula
C4H8O2S
Molar mass
120.17 g/mol
EC number
251-399-5
HS code
293090
Category
Carboxylic acids and anhydrides

What is S-Methylthiolactic acid?

Plain description, key identifiers and synonyms

S-Methylthiolactic acid is a chemical substance with the molecular formula C4H8O2S and a molar mass of 120.17 g/mol. Its CAS registry number is 58809-73-7. The IUPAC name is 2-methylsulfanylpropanoic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methylsulfanylpropanoic acid
CAS number
58809-73-7 CAS number cross-checkedOther or deprecated CAS: 33178-97-1
EC numbers
251-399-5, 261-450-3
Molecular formula
C4H8O2S
UNII
BV8122YYCR
MDL number
MFCD09944933
InChIKey
SBJPKUSFMZKDRZ-UHFFFAOYSA-N
InChI
InChI=1S/C4H8O2S/c1-3(7-2)4(5)6/h3H,1-2H3,(H,5,6)
SMILES (canonical and isomeric)
CC(C(=O)O)SC

Synonyms

  • 2-(methylthio)propanoic acid
  • 2-(Methylthio)propionic acid
  • propanoic acid, 2-(methylthio)-
  • 2-(methylsulfanyl)propanoic acid
  • 2-methylsulfanylpropanoic acid
  • (R)-2-(Methylthio)propanoic acid
  • (R)-2-(Methylthio)propionic acid
  • 2-(methylthio)propanoicacid
  • S-methyl-2-mercaptopropionic acid
  • (+/-)-2-(Methylthio)propanoic acid
  • 2-(methylthio)propanoic acid(SALTDATA: 0.25H2O 0.05H2SO4)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
120.17 g/molcalc.
Exact mass
120.0245 Dacalc.
LogP (octanol/water)
0.82calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
7calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

S-Methylthiolactic acid suppliers

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S-Methylthiolactic acid price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Flavouring and nutrient

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code S-Methylthiolactic acid is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for S-Methylthiolactic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about S-Methylthiolactic acid, based on the data on this page

What is S-Methylthiolactic acid?

S-Methylthiolactic acid is a chemical substance with the molecular formula C4H8O2S and a molar mass of 120.17 g/mol. Its CAS registry number is 58809-73-7. The IUPAC name is 2-methylsulfanylpropanoic acid.

What is the CAS number of S-Methylthiolactic acid?

The CAS registry number of S-Methylthiolactic acid is 58809-73-7. Other or deprecated CAS numbers: 33178-97-1.

What is the molecular formula and weight of S-Methylthiolactic acid?

The molecular formula of S-Methylthiolactic acid is C4H8O2S and its molar mass is 120.17 g/mol.

What is S-Methylthiolactic acid used for?

Known uses and roles of S-Methylthiolactic acid include building blocks in research and laboratory and flavouring and nutrient.

Is S-Methylthiolactic acid hazardous?

No GHS hazard classification for S-Methylthiolactic acid is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of S-Methylthiolactic acid?

S-Methylthiolactic acid is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy S-Methylthiolactic acid?

Post a free request on CompoundList and suppliers of S-Methylthiolactic acid will send you quotes. Your contact details stay private until you accept a quote.

What is the price of S-Methylthiolactic acid?

Suppliers quote S-Methylthiolactic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle S-Methylthiolactic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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