CompoundList
Sign in
Peptides

Cys-Pro

Also known as L-cysteinyl-L-proline, L-Cys-L-Pro, cysteylproline

CAS 70873-83-5Formula C8H14N2O3SMolar mass 218.28 g/mol
Get quotes Safety data
Cys-Pro chemical structure, C8H14N2O3S, CAS 70873-83-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
70873-83-5
Formula
C8H14N2O3S
Molar mass
218.28 g/mol
HS code
293399
Category
Peptides

What is Cys-Pro?

Plain description, key identifiers and synonyms

Cys-Pro is a dipeptide composed of L-cysteine and L-proline joined by a peptide linkage. It has a role as a metabolite. It is functionally related to a L-proline and a L-cysteine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2S)-1-[(2R)-2-amino-3-sulfanylpropanoyl]pyrrolidine-2-carboxylic acid
CAS number
70873-83-5
Molecular formula
C8H14N2O3S
InChIKey
ZSRSLWKGWFFVCM-WDSKDSINSA-N
InChI
InChI=1S/C8H14N2O3S/c9-5(4-14)7(11)10-3-1-2-6(10)8(12)13/h5-6,14H,1-4,9H2,(H,12,13)/t5-,6-/m0/s1
Canonical SMILES
NC(CS)C(=O)N1CCCC1C(=O)O
Isomeric SMILES
C1C[C@H](N(C1)C(=O)[C@H](CS)N)C(=O)O

Synonyms

  • L-cysteinyl-L-proline
  • L-Cys-L-Pro
  • cysteylproline
  • (2S)-1-[(2R)-2-amino-3-sulfanylpropanoyl]pyrrolidine-2-carboxylic acid
  • Cysteinyl-Proline
  • C-P

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
218.28 g/molcalc.
Exact mass
218.0725 Dacalc.
LogP (octanol/water)
-0.68calc.
Topological polar surface area
83.63 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
3calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CCNC1

C1CCNC1

1 ring, 5 atoms, the Pyrrolidine ring system.

22,348 other chemicals share this scaffold

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.

Cys-Pro suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

No supplier listings yet

Post one free request and suppliers who make or trade Cys-Pro can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Cys-Pro 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.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Roles

  • metabolite

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 Cys-Pro is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Cys-Pro?

Cys-Pro is a dipeptide composed of L-cysteine and L-proline joined by a peptide linkage. It has a role as a metabolite. It is functionally related to a L-proline and a L-cysteine.

What is the CAS number of Cys-Pro?

The CAS registry number of Cys-Pro is 70873-83-5.

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

The molecular formula of Cys-Pro is C8H14N2O3S and its molar mass is 218.28 g/mol.

What is Cys-Pro used for?

Known uses and roles of Cys-Pro include metabolite.

Is Cys-Pro hazardous?

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

Cys-Pro is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cys-Pro?

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

What is the price of Cys-Pro?

Suppliers quote Cys-Pro 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 Cys-Pro

Get quotes for Cys-Pro

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Cys-Pro
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Cys-Pro with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/cys-pro-70873-83-5" title="Cys-Pro structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Peptides or HS code 293399

Price on request
Free quotes, contact stays private
Get quotes