CompoundList

Ala-Cys

Also known as l-alanyl-l-cysteine, alanylcysteine, Alanyl-Cysteine

CAS 2490-72-4Formula C6H12N2O3SMolar mass 192.24 g/molEC 639-467-6
Ala-Cys chemical structure, C6H12N2O3S, CAS 2490-72-4
2D chemical structure

Key facts

What buyers check first

CAS number
2490-72-4
Formula
C6H12N2O3S
Molar mass
192.24 g/mol
EC number
639-467-6
HS code
293090
Category
Peptides

What is Ala-Cys?

Plain description, key identifiers and synonyms

Ala-Cys is a dipeptide obtained by formal condensation of the carboxy group of L-alanine with the amino group of L-cysteine. It is functionally related to a L-alanine and a L-cysteine. It is a tautomer of an Ala-Cys zwitterion.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R)-2-[[(2S)-2-aminopropanoyl]amino]-3-sulfanylpropanoic acid
CAS number
2490-72-4
EC number
639-467-6
Molecular formula
C6H12N2O3S
InChIKey
JQDFGZKKXBEANU-IMJSIDKUSA-N
InChI
InChI=1S/C6H12N2O3S/c1-3(7)5(9)8-4(2-12)6(10)11/h3-4,12H,2,7H2,1H3,(H,8,9)(H,10,11)/t3-,4-/m0/s1
Canonical SMILES
CC(N)C(=O)NC(CS)C(=O)O
Isomeric SMILES
C[C@@H](C(=O)N[C@@H](CS)C(=O)O)N

Synonyms

  • l-alanyl-l-cysteine
  • alanylcysteine
  • Alanyl-Cysteine
  • AC dipeptide
  • A-C Dipeptide
  • Alanine Cysteine dipeptide
  • Alanine-Cysteine dipeptide
  • (2R)-2-[[(2S)-2-aminopropanoyl]amino]-3-sulanylpropanoic 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
192.24 g/molcalc.
Exact mass
192.0569 Dacalc.
LogP (octanol/water)
-1.17calc.
Topological polar surface area
92.42 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
4calc.
Heavy atoms
12calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
2calc.
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.

Ala-Cys suppliers

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Ala-Cys price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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

Frequently asked questions

Quick answers about Ala-Cys, based on the data on this page

What is Ala-Cys?

Ala-Cys is a dipeptide obtained by formal condensation of the carboxy group of L-alanine with the amino group of L-cysteine. It is functionally related to a L-alanine and a L-cysteine. It is a tautomer of an Ala-Cys zwitterion.

What is the CAS number of Ala-Cys?

The CAS registry number of Ala-Cys is 2490-72-4.

What is the molecular formula and weight of Ala-Cys?

The molecular formula of Ala-Cys is C6H12N2O3S and its molar mass is 192.24 g/mol.

Is Ala-Cys hazardous?

No GHS hazard classification for Ala-Cys 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 Ala-Cys?

Ala-Cys 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 Ala-Cys?

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

What is the price of Ala-Cys?

Suppliers quote Ala-Cys 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 Ala-Cys

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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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