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Cosmetic antioxidants

Hypotaurine

Also known as 2-Aminoethanesulfinic acid, Ethanesulfinic acid, 2-amino-, 2-aminoethane-1-sulfinic acid

CAS 300-84-5Formula C2H7NO2SMolar mass 109.15 g/molEC 428-720-4
GHS signal word: Warning. Pictograms: Harmful or irritant 15 suppliers listed
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Hypotaurine chemical structure, C2H7NO2S, CAS 300-84-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
300-84-5
Formula
C2H7NO2S
Molar mass
109.15 g/mol
EC number
428-720-4
HS code
293090
Category
Cosmetic antioxidants

What is Hypotaurine?

Plain description, key identifiers and synonyms

Hypotaurine is an aminosulfinic acid comprising ethylamine having the sulfo group at the 2-position. It has a role as a metabolite, a mouse metabolite and a human metabolite. It is a conjugate acid of a hypotaurine(1-). It is a tautomer of a hypotaurine zwitterion.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-aminoethanesulfinic acid
CAS number
300-84-5 CAS number cross-checked
EC numbers
428-720-4, 627-467-9
Molecular formula
C2H7NO2S
UNII
5L08GE4332
MDL number
MFCD00038197
INCI name
AMINOETHANESULFINIC ACID
InChIKey
VVIUBCNYACGLLV-UHFFFAOYSA-N
InChI
InChI=1S/C2H7NO2S/c3-1-2-6(4)5/h1-3H2,(H,4,5)
SMILES (canonical and isomeric)
C(CS(=O)O)N

Synonyms

  • 2-Aminoethanesulfinic acid
  • Ethanesulfinic acid, 2-amino-
  • 2-aminoethane-1-sulfinic acid
  • aminoethanesulfinic acid
  • 2-azaniumylethanesulfinate
  • 2-Aminoethylsulfinic acid
  • Cystaminesulfinic acid
  • Cystaminesulfinate
  • 2-Aminoethylsulfinic Acid, 2-Aminoethanesulfinic Acid2-Aminoethylsulfinic AcidCystaminesulfinic Acid
  • 2-Aminoethylsulfinate
  • Tocris-0208
  • 2-amino-Ethanesulfinate
  • Taurolithocholic Impurity 9
  • 2-amino-Ethanesulfinic acid
  • 2-aminoethane-1-sulfinicacid
  • Hypotaurine, >=98% (TLC)
  • Sdccgsbi-0050555.p002
  • (S~1~S)-2-Aminoethane-1-sulfinic 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
109.15 g/molcalc.
Exact mass
109.0197 Dacalc.
LogP (octanol/water)
-0.83calc.
Topological polar surface area
63.32 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
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

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

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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).
  • 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

Hypotaurine suppliers

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

All 15 suppliers
15 of 15 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

15 suppliers in 5 countries

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Hypotaurine 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

Use classes: Cosmetics.

Cosmetic ingredient, INCI name AMINOETHANESULFINIC ACID(antioxidant, reducing)

Pharmacological actions

  • Antioxidants

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite

Functional uses

  • Antioxidant
  • Reducing agent

Cosmetic functions

  • Antioxidant
  • Reducing

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

Frequently asked questions

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

What is Hypotaurine?

Hypotaurine is an aminosulfinic acid comprising ethylamine having the sulfo group at the 2-position. It has a role as a metabolite, a mouse metabolite and a human metabolite. It is a conjugate acid of a hypotaurine(1-). It is a tautomer of a hypotaurine zwitterion.

What is the CAS number of Hypotaurine?

The CAS registry number of Hypotaurine is 300-84-5.

What is the molecular formula and weight of Hypotaurine?

The molecular formula of Hypotaurine is C2H7NO2S and its molar mass is 109.15 g/mol.

What is Hypotaurine used for?

Use classes: Cosmetics.

Is Hypotaurine hazardous?

Hypotaurine carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Hypotaurine?

Hypotaurine 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 Hypotaurine?

CompoundList lists 15 suppliers of Hypotaurine in China, United States, United Kingdom, Germany and 1 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 Hypotaurine?

Suppliers quote Hypotaurine 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 Hypotaurine

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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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