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CAS 107-35-7

CAS 107-35-7 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 107-35-7
CAS 107-35-7PubChem CID 1123

Taurine

Taurine is an amino sulfonic acid that is the 2-amino derivative of ethanesulfonic acid. It is a naturally occurring amino acid derived from methionine and cysteine metabolism. An abundant component of fish- and meat-based foods, it has been used as an oral supplement in the treatment of disorders such as cystic fibrosis and hypertension. It has a role as an antioxidant, a nutrient, a radical scavenger, a glycine receptor agonist, a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is a conjugate acid of a 2-aminoethanesulfonate. It is a tautomer of a taurine zwitterion. — ChEBI

IUPAC name
2-aminoethanesulfonic acid
Molecular formula
C2H7NO3S
Molecular weight
125.15 g/mol
Exact mass
125.01466426 Da
XLogP3
-4.1
Topological polar surface area
88.8 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

L-TaurineEthanesulfonic acid, 2-amino-tauphon2-Aminoethylsulfonic acidaminoethylsulfonic acid2-SulfoethylamineAminoethanesulfonic acidO-Due
16 more reported names
2-aminoethane-1-sulfonic acidtaufonbeta-Aminoethylsulfonic acidTaurinumTaurinaFEMA No. 3813TaukardNCI-C60606NSC-324281EQV5MLY3DCHEBI:158912-azaniumylethanesulfonateL-Taurine HighL-Taurine 7421RefChem:6284L-Taurine High 7422
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:15891

taurine

An amino sulfonic acid that is the 2-amino derivative of ethanesulfonic acid. It is a naturally occurring amino acid derived from methionine and cysteine metabolism. An abundant component of fish- and meat-based foods, it has been used as an oral supplement in the treatment of disorders such as cystic fibrosis and hypertension.

Formula
C2H7NO3S
Average mass
125.149 g/mol
Monoisotopic mass
125.01466 Da
Formal charge
0
  • amino sulfonic acid — is a (CHEBI:37793)
  • antineoplastic agent — has role (CHEBI:35610)
  • human metabolite — has role (CHEBI:77746)
  • glycine receptor agonist — has role (CHEBI:64589)
  • nutrient — has role (CHEBI:33284)
  • radical scavenger — has role (CHEBI:48578)
  • Escherichia coli metabolite — has role (CHEBI:76971)
  • Saccharomyces cerevisiae metabolite — has role (CHEBI:75772)
  • hypoglycemic agent — has role (CHEBI:35526)
  • antihypertensive agent — has role (CHEBI:35674)
  • immunosuppressive agent — has role (CHEBI:35705)
  • antioxidant — has role (CHEBI:22586)
  • mouse metabolite — has role (CHEBI:75771)
  • antipsychotic agent — has role (CHEBI:35476)
  • antineoplastic agent — has role (CHEBI:35610)
  • human metabolite — has role (CHEBI:77746)
  • glycine receptor agonist — has role (CHEBI:64589)
  • nutrient — has role (CHEBI:33284)
  • radical scavenger — has role (CHEBI:48578)
  • Escherichia coli metabolite — has role (CHEBI:76971)
  • Saccharomyces cerevisiae metabolite — has role (CHEBI:75772)
  • hypoglycemic agent — has role (CHEBI:35526)
  • antihypertensive agent — has role (CHEBI:35674)
  • immunosuppressive agent — has role (CHEBI:35705)
  • antioxidant — has role (CHEBI:22586)
  • mouse metabolite — has role (CHEBI:75771)
  • antipsychotic agent — has role (CHEBI:35476)
  • amino sulfonic acid — is a (CHEBI:37793)
  • 2-aminoethanesulfonate — is conjugate acid of (CHEBI:32970)
  • taurine zwitterion — is tautomer of (CHEBI:507393)
Additional curated names
2-aminoethanesulfonic acid2-Aminoethanesulfonic acid2-aminoethyl sulfonateAminoethylsulfonic acidEthanesulfonic acid, 2-amino-FEMA NO. 3813NSC-32428TaurateTaurinebeta-aminoethylsulfonic acid
Cross-references from this source
  • CAS: 107-35-7 — KEGG COMPOUND
  • CAS: 107-35-7 — ChemIDplus
  • CAS: 107-35-7 — NIST Chemistry WebBook
  • REGISTRY_NUMBER: 1751215 — Reaxys
  • REGISTRY_NUMBER: 82121 — Gmelin
  • MANUAL_X_REF: 4486 — DrugCentral
  • MANUAL_X_REF: C00048188 — KNApSAcK
  • MANUAL_X_REF: C00245 — KEGG COMPOUND
  • MANUAL_X_REF: D00047 — KEGG DRUG
  • MANUAL_X_REF: DB01956 — DrugBank
  • MANUAL_X_REF: HMDB0000251 — HMDB
  • MANUAL_X_REF: TAU — PDBeChem
  • MANUAL_X_REF: Taurine — Wikipedia
  • MANUAL_X_REF: TAURINE — MetaCyc

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2025-07-08. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match1123

Attributed physical-property, hazard, environmental and use annotations.

  • Boiling Point: It decomposes before reaching boiling point (325ºC) Source: DrugBank
  • First Aid: EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.; SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.; INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) shou Source: CAMEO Chemicals
  • Note: This chemical does not meet GHS hazard criteria for 18.5% (307 of 1656) of reports. Source: European Chemicals Agency (ECHA)
  • Signal: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H315 (81.5%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (81.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (81.4%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 1656 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 307 of 1656 reports by companies.; There are 14 notifications provided by 1349 of 1656 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Environmental Bioconcentration: An estimated BCF of 3 was calculated in fish for taurine(SRC), using an estimated log Kow of -3.36(1) and a regression-derived equation(1). According to a classification scheme(2), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 1(SRC), determined from a structure estimation method(2), indicates that taurine is expected to have very high mobility in soil(SRC). Taurine has pKa values of 1.05 (the acid) and 9.06 (the amine)(3) indicating that this compound will exist as a zwitterion having both a cation and anion form in the environment and cations generally adsorb more strongly to soils containing organic carbon and clay than their neutral counterparts(4). Volatilization of taurine from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 1.7X10-12 atm-cu m/mole(SRC), using a fragment constant estimation method(2). Taurine is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 1.7X10-7 mm Hg at 25 °C(SRC), determined from a fragment constant method(2). Various species of bacteria and fungi are capable of degrading taurine and using taurine as a sole source of sulfur, carbon and energy(5,6), therefore, biodegradation may be an important fate process(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 1(SRC), determined from a structure estimation method(2), indicates that taurine is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 1.7X10-12 atm-cu m/mole(SRC), developed using a fragment constant estimation method(2). Taurine has pKa values of 1.05 (the acid) and 9.06 (the amine)(4) indicating that this compound will exist as a zwitterion having both a cation and anion form in the environment that also suggests volatilization from water will not be an important fate process(SRC). According to a classification scheme(5), an estimated BCF of 3(SRC), from an estimated log Kow of -3.36(2) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Taurine is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(3). Various species of bacteria and fungi are capable of degrading taurine and using taurine as a sole source of sulfur, carbon and energy(5,6), ther Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), taurine, which has an estimated vapor pressure of 1.7X10-7 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), will exist in both the vapor and particulate phases in the ambient atmosphere. Vapor-phase taurine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 12 hrs(SRC), calculated from its rate constant of 3.3X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(2). Particulate-phase taurine may be removed from the air by wet and dry deposition(SRC). Source: Hazardous Substances Data Bank (HSDB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
EMBL-EBI ChEBIExact match2026-08-31
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

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CAS 107-35-7 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 107-35-7 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.