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Heterocyclic building blocks

2,4-Dihydroxythiazole

Also known as 4-Hydroxythiazol-2(3H)-one, Thiazole-2,4-diol, 4-hydroxy-3H-1,3-thiazol-2-one

CAS 625-85-4Formula C3H3NO2SMolar mass 117.13 g/mol
2 suppliers listed
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2,4-Dihydroxythiazole chemical structure, C3H3NO2S, CAS 625-85-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
625-85-4
Formula
C3H3NO2S
Molar mass
117.13 g/mol
HS code
293410
Category
Heterocyclic building blocks

What is 2,4-Dihydroxythiazole?

Plain description, key identifiers and synonyms

2,4-Dihydroxythiazole is a chemical substance with the molecular formula C3H3NO2S and a molar mass of 117.13 g/mol. Its CAS registry number is 625-85-4. The IUPAC name is 4-hydroxy-3H-1,3-thiazol-2-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-hydroxy-3H-1,3-thiazol-2-one
CAS number
625-85-4 CAS number cross-checkedOther or deprecated CAS: 62326-99-2
Molecular formula
C3H3NO2S
InChIKey
MQYUOKQDHLEQAC-UHFFFAOYSA-N
InChI
InChI=1S/C3H3NO2S/c5-2-1-7-3(6)4-2/h1,5H,(H,4,6)
SMILES (canonical and isomeric)
C1=C(NC(=O)S1)O

Synonyms

  • 4-Hydroxythiazol-2(3H)-one
  • Thiazole-2,4-diol
  • 4-hydroxy-3H-1,3-thiazol-2-one
  • 4-hydroxy-2(3H)-Thiazolone
  • 4-hydroxy-1,3-thiazol-2(3H)-one
  • 2,4-Dioxythiazol
  • 2-oxo-4-hydroxyl-thiazole
  • Thiazole, 2,4-dihydroxy-
  • thiazolidinedione deriv. 21
  • 1,3-Thiazole-2,4-diol #
  • 4-hydroxy-2,3-dihydro-1,3-thiazol-2-one

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
117.13 g/molcalc.
Exact mass
116.9884 Dacalc.
LogP (octanol/water)
0.14calc.
Topological polar surface area
53.09 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
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, O=c1[nH]ccs1

O=c1[nH]ccs1

1 ring, 6 atoms, the 2,3-Dihydro-1,3-thiazol-2-one ring system.

152 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.

2,4-Dihydroxythiazole suppliers

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All 2 suppliers

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

2 suppliers in 2 countries

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2,4-Dihydroxythiazole price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

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 2,4-Dihydroxythiazole is traded under.

HS 2934.10Indicative HS code

Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the…

World exports in 2024
$3.88B
−16.1% vs 2023, imports $3.12B
2019 to 2024
Top exporters
  1. Switzerland * partner reported36.4%
  2. Ireland28.8%
  3. China10.0%
Top importers
  1. Canada33.4%
  2. United States14.4%
  3. Ireland13.1%

* Partner reported figures, a lower bound.

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

The HS code shown for 2,4-Dihydroxythiazole is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2,4-Dihydroxythiazole, based on the data on this page

What is 2,4-Dihydroxythiazole?

2,4-Dihydroxythiazole is a chemical substance with the molecular formula C3H3NO2S and a molar mass of 117.13 g/mol. Its CAS registry number is 625-85-4. The IUPAC name is 4-hydroxy-3H-1,3-thiazol-2-one.

What is the CAS number of 2,4-Dihydroxythiazole?

The CAS registry number of 2,4-Dihydroxythiazole is 625-85-4. Other or deprecated CAS numbers: 62326-99-2.

What is the molecular formula and weight of 2,4-Dihydroxythiazole?

The molecular formula of 2,4-Dihydroxythiazole is C3H3NO2S and its molar mass is 117.13 g/mol.

What is 2,4-Dihydroxythiazole used for?

Known uses and roles of 2,4-Dihydroxythiazole include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 2,4-Dihydroxythiazole hazardous?

No GHS hazard classification for 2,4-Dihydroxythiazole 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 2,4-Dihydroxythiazole?

2,4-Dihydroxythiazole is usually classified under HS code 293410 (Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2,4-Dihydroxythiazole?

CompoundList lists 2 suppliers of 2,4-Dihydroxythiazole in China and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 2,4-Dihydroxythiazole?

Suppliers quote 2,4-Dihydroxythiazole 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 2,4-Dihydroxythiazole

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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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