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Hair care agents

Cysteamine

Also known as 2-Aminoethanethiol, Mercaptamine, Thioethanolamine

CAS 60-23-1Formula C2H7NSMolar mass 77.15 g/molEC 200-463-0
GHS signal word: Warning. Pictograms: Harmful or irritant 81 suppliers listed Drug substance
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Cysteamine chemical structure, C2H7NS, CAS 60-23-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Crystals by sublimation in vacuo
Melting point
97 to 98.5
Boiling point
Decomposes
Solubility
In water, soluble at 20 °C, value not given
HS code
293090
Category
Hair care agents
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Cysteamine?

Plain description, key identifiers and synonyms

Cysteamine is an amine that consists of an ethane skeleton substituted with a thiol group at C-1 and an amino group at C-2. It has a role as a geroprotector, a radiation protective agent, a mouse metabolite and a human metabolite. It is a thiol and an amine. It is functionally related to an ethylamine. It is a conjugate base of a cysteaminium.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-aminoethanethiol
CAS number
60-23-1 CAS number cross-checked
EC number
200-463-0
Molecular formula
C2H7NS
UNII
5UX2SD1KE2
MDL number
MFCD00008196
INCI name
CYSTEAMINE
InChIKey
UFULAYFCSOUIOV-UHFFFAOYSA-N
InChI
InChI=1S/C2H7NS/c3-1-2-4/h4H,1-3H2
SMILES (canonical and isomeric)
C(CS)N

Synonyms

  • 2-Aminoethanethiol
  • Mercaptamine
  • Thioethanolamine
  • 2-Mercaptoethylamine
  • Mercamine
  • beta-Mercaptoethylamine
  • Decarboxycysteine
  • Cysteinamine
  • 2-Amino-1-ethanethiol
  • beta-Aminoethanethiol
  • Ethanethiol, 2-amino-
  • Mercaptoethylamine
  • 2-Mercaptoethanamine
  • beta-Aminoethylthiol
  • 2-Aminoethyl mercaptan
  • beta-MEA
  • Mercaptamina
  • Mercaptaminum
  • 2-Amino-ethanethiol
  • 2-aminoethane-1-thiol
  • 2 Aminoethanethiol
  • Tosylate, Cysteamine
  • beta Mercaptoethylamine
  • 35S-Labeled Cysteamine
  • Hydrobromide, Cysteamine
Show all 38 synonyms
  • 2-azaniumylethanethiolate
  • Cysteamine, 35S Labeled
  • Dihydrochloride, Cysteamine
  • Becaptan
  • Cysteamin
  • Lambraten
  • Lambratene
  • Riacon
  • Cisteamina
  • Mercaptamin
  • (2-Mercaptoethyl)amine
  • MEA (mercaptan)
  • Mecramine

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

Appearance
Crystals by sublimation in vacuoexp.
Odour
Disagreeable odorexp.
Melting point
97 to 98.5exp.
Boiling point
Decomposesexp.
Solubility
In water, soluble at 20 °C, value not givenexp.

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
77.15 g/molcalc.
Exact mass
77.0299 Dacalc.
LogP (octanol/water)
-0.13calc.
Topological polar surface area
26.02 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
4calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Cysteamine suppliers

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

All 81 suppliers
30 of 30 offers

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

81 suppliers in 15 countries

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Cysteamine 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

Therapeutic category: Antidote to acetaminophen.

Experimentally as a radioprotective agent and to produce acute and chronic duodenal ulcers in rats.

Cosmetic ingredient, INCI name CYSTEAMINE(hair waving or straightening)

Pharmacological actions

  • Cystine Depleting Agents

Roles

  • animal metabolite
  • anti-HIV agent
  • antimicrobial agent
  • antiviral agent
  • eukaryotic metabolite
  • geroprotector
  • human metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite
  • ophthalmology drug
  • pharmaceutical
  • protective agent
  • radiation protective agent

Functional uses

  • Hair waving or straightening
  • Processing aids not otherwise specified

Cosmetic functions

  • Hair waving or straightening

Pharmacology

Cysteamine is a Cystine Depleting Agent. The mechanism of action of cysteamine is as a Cystine Disulfide Reduction.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cysteamine 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 Cysteamine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Cysteamine?

Cysteamine is an amine that consists of an ethane skeleton substituted with a thiol group at C-1 and an amino group at C-2. It has a role as a geroprotector, a radiation protective agent, a mouse metabolite and a human metabolite. It is a thiol and an amine. It is functionally related to an ethylamine.

What is the CAS number of Cysteamine?

The CAS registry number of Cysteamine is 60-23-1.

What is the molecular formula and weight of Cysteamine?

The molecular formula of Cysteamine is C2H7NS and its molar mass is 77.15 g/mol.

What is Cysteamine used for?

Therapeutic category: Antidote to acetaminophen. Experimentally as a radioprotective agent and to produce acute and chronic duodenal ulcers in rats.

Is Cysteamine hazardous?

Cysteamine carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cysteamine?

Cysteamine 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 Cysteamine?

CompoundList lists 81 suppliers of Cysteamine in China, United States, United Kingdom, Canada and 11 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Cysteamine?

Suppliers quote Cysteamine 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 Cysteamine

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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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