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Amino acids and derivatives

Felinine

Also known as S-(3-Hydroxy-1,1-dimethylpropyl)-L-cysteine, S-(4-hydroxy-2-methylbutan-2-yl)-L-cysteine, L-Cysteine, S-(3-hydroxy-1,1-dimethylpropyl)-

CAS 471-09-0Formula C8H17NO3SMolar mass 207.30 g/mol
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Felinine chemical structure, C8H17NO3S, CAS 471-09-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
471-09-0
Formula
C8H17NO3S
Molar mass
207.30 g/mol
HS code
293090
Category
Amino acids and derivatives

What is Felinine?

Plain description, key identifiers and synonyms

Felinine is a cysteine thioether that is the S-(4-hydroxy-2-methylbutan-2-yl) derivative of L-cysteine. It is a major component of the urine of the domestic cat. It has a role as a pheromone and a mammalian metabolite. It is a L-cysteine thioether and a non-proteinogenic L-alpha-amino acid. It is a tautomer of a felinine zwitterion.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R)-2-amino-3-(4-hydroxy-2-methylbutan-2-yl)sulfanylpropanoic acid
CAS number
471-09-0 CAS number cross-checked
Molecular formula
C8H17NO3S
UNII
8V49J0ABL5
InChIKey
IFERABFGYYJODC-LURJTMIESA-N
InChI
InChI=1S/C8H17NO3S/c1-8(2,3-4-10)13-5-6(9)7(11)12/h6,10H,3-5,9H2,1-2H3,(H,11,12)/t6-/m0/s1
Canonical SMILES
CC(C)(CCO)SCC(N)C(=O)O
Isomeric SMILES
CC(C)(CCO)SC[C@@H](C(=O)O)N

Synonyms

  • S-(3-Hydroxy-1,1-dimethylpropyl)-L-cysteine
  • S-(4-hydroxy-2-methylbutan-2-yl)-L-cysteine
  • L-Cysteine, S-(3-hydroxy-1,1-dimethylpropyl)-
  • 2-Amino-7-hydroxy-5,5-dimethyl-4-thiaheptanoic acid
  • l-Felinine
  • (-)-felinine
  • (2R)-2-amino-3-[(4-hydroxy-2-methylbutan-2-yl)sulfanyl]propanoic acid
  • (2R)-2-amino-3-(4-hydroxy-2-methylbutan-2-yl)sulfanylpropanoic acid
  • L-Cysteine,S-(3-hydroxy-1,1-dimethylpropyl)-
  • L-2-Amino-7-hydroxy-5,5-dimethyl-4-thiaheptanoic acid
  • (R)-2-Amino-3-((4-hydroxy-2-methylbutan-2-yl)thio)propanoic acid
  • Alanine, 3-((3-hydroxy-1,1-dimethylpropyl)thio)-, l-
  • (2R)-2-amino-3-(3-hydroxy-1,1-dimethyl-propyl)sulfanyl-propanoic acid

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
207.30 g/molcalc.
Exact mass
207.0929 Dacalc.
LogP (octanol/water)
0.29calc.
Topological polar surface area
83.55 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
6calc.
Heavy atoms
13calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.88calc.
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.

Felinine suppliers

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Felinine price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • animal metabolite
  • eukaryotic metabolite
  • mammalian metabolite
  • metabolite
  • molecular messenger
  • pheromone
  • semiochemical

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 Felinine 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 Felinine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Felinine, based on the data on this page

What is Felinine?

Felinine is a cysteine thioether that is the S-(4-hydroxy-2-methylbutan-2-yl) derivative of L-cysteine. It is a major component of the urine of the domestic cat. It has a role as a pheromone and a mammalian metabolite. It is a L-cysteine thioether and a non-proteinogenic L-alpha-amino acid.

What is the CAS number of Felinine?

The CAS registry number of Felinine is 471-09-0.

What is the molecular formula and weight of Felinine?

The molecular formula of Felinine is C8H17NO3S and its molar mass is 207.30 g/mol.

What is Felinine used for?

Known uses and roles of Felinine include animal metabolite, eukaryotic metabolite, mammalian metabolite, metabolite, molecular messenger and 2 more.

Is Felinine hazardous?

No GHS hazard classification for Felinine 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 Felinine?

Felinine 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 Felinine?

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What is the price of Felinine?

Suppliers quote Felinine 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 Felinine

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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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