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Synthesis reagents

Cystamine

Also known as Decarboxycystine, 2,2'-Dithiobis(ethylamine), Cystineamine

CAS 51-85-4Formula C4H12N2S2Molar mass 152.29 g/molEC 200-129-4
9 suppliers listed
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Cystamine chemical structure, C4H12N2S2, CAS 51-85-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
51-85-4
Formula
C4H12N2S2
Molar mass
152.29 g/mol
EC number
200-129-4
HS code
293090
Category
Synthesis reagents

What is Cystamine?

Plain description, key identifiers and synonyms

Cystamine is an organic disulfide obtgained by oxidative dimerisation of cysteamine. It has a role as an EC 2.3.2.13 (protein-glutamine gamma-glutamyltransferase) inhibitor. It is an organic disulfide and a primary amino compound. It is functionally related to a cysteamine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-(2-aminoethyldisulfanyl)ethanamine
CAS number
51-85-4 CAS number cross-checked
EC number
200-129-4
Molecular formula
C4H12N2S2
UNII
R110LV8L02
MDL number
MFCD01002952
InChIKey
APQPRKLAWCIJEK-UHFFFAOYSA-N
InChI
InChI=1S/C4H12N2S2/c5-1-3-7-8-4-2-6/h1-6H2
SMILES (canonical and isomeric)
C(CSSCCN)N

Synonyms

  • Decarboxycystine
  • 2,2'-Dithiobis(ethylamine)
  • Cystineamine
  • Cystinamin
  • Mercamine disulfide
  • Cysteinamine disulfide
  • Ethanamine, 2,2'-dithiobis-
  • Becaptan disulfure
  • Bis(beta-aminoethyl)disulfide
  • 2,2'-Dithiobisethanamine
  • beta-Mercaptoethylamine disulfide
  • beta,beta'-Diaminodiethyl disulfide
  • 2-(2-aminoethyldisulfanyl)ethylamine
  • 2,2'-Dithiobis[ethylamine]
  • Sulfate, Cystamine
  • Diacetate, Cystamine
  • Disulfide, Cysteinamine
  • Hydrobromide, Cystamine
  • Calcium Salt, Cystamine
  • Dihydrobromide, Cystamine
  • 2,2' Dithiobisethanamine
  • 2,2'-disulfanediyldiethanamine
  • 2-[(2-aminoethyl)disulfanyl]ethan-1-amine
  • Aminoethyl-SS-ethylamine
  • 2-(2-aminoethyldisulfanyl)ethanamine
Show all 31 synonyms
  • 2-Aminoethyl disulfide
  • Ethylamine, 2,2'-dithiobis-
  • bis(2-aminoethyl)disulphide
  • 4-04-00-01577 (Beilstein Handbook Reference)
  • DivK1c_000828
  • 3,4-Dithiahexyl-1,6-diamine

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
152.29 g/molcalc.
Exact mass
152.0442 Dacalc.
LogP (octanol/water)
0.29calc.
Topological polar surface area
52.04 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
5calc.
Heavy atoms
8calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
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.

Cystamine suppliers

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

All 9 suppliers
9 of 9 offers
  • AChemBlock
    United States, HaywardUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • AgroIntelBioScan.com
    Singapore, SingaporeUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • Axispharm
    United States, San DiegoUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • BroadPharm
    United States, San DiegoUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • Chemenu. Inc.
    China, ShanghaiUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • Leapchem
    China, Hong KongUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • PurePEG, LLC
    United States, San DiegoUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • Sinfoo Biotech
    China, NanjingUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View
  • Vitas-M Laboratory
    Hong Kong, CentralUnclaimed profile
    CystamineGrade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

9 suppliers in 4 countries

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Cystamine 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

Pharmacological actions

  • Enzyme Inhibitors
  • Radiation-Protective Agents
  • Sulfhydryl Reagents

Roles

  • enzyme inhibitor

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

Frequently asked questions

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

What is Cystamine?

Cystamine is an organic disulfide obtgained by oxidative dimerisation of cysteamine. It has a role as an EC 2.3.2.13 (protein-glutamine gamma-glutamyltransferase) inhibitor. It is an organic disulfide and a primary amino compound. It is functionally related to a cysteamine.

What is the CAS number of Cystamine?

The CAS registry number of Cystamine is 51-85-4.

What is the molecular formula and weight of Cystamine?

The molecular formula of Cystamine is C4H12N2S2 and its molar mass is 152.29 g/mol.

What is Cystamine used for?

Known uses and roles of Cystamine include synthesis reagents in research and laboratory, biochemical and pharmacological tools in research and laboratory, enzyme inhibitor, enzyme inhibitors, radiation-protective agents and 1 more.

Is Cystamine hazardous?

No GHS hazard classification for Cystamine 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 Cystamine?

Cystamine 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 Cystamine?

CompoundList lists 9 suppliers of Cystamine in United States, China, Hong Kong and Singapore. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Cystamine?

Suppliers quote Cystamine 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 Cystamine

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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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