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Heterocyclic building blocks

2-Hydroxyimidazole

Also known as 1,3-Dihydroimidazol-2-one, 4-Imidazolin-2-one, 1,3-Dihydro-2H-imidazol-2-one

CAS 5918-93-4Formula C3H4N2OMolar mass 84.08 g/molEC 852-506-3
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant, Serious health hazard 13 suppliers listed
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2-Hydroxyimidazole chemical structure, C3H4N2O, CAS 5918-93-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5918-93-4
Formula
C3H4N2O
Molar mass
84.08 g/mol
EC number
852-506-3
HS code
293329
Category
Heterocyclic building blocks

What is 2-Hydroxyimidazole?

Plain description, key identifiers and synonyms

1,3-dihydro-2H-imidazol-2-one is an imidazolinone.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,3-dihydroimidazol-2-one
CAS number
5918-93-4 CAS number cross-checkedOther or deprecated CAS: 82358-14-3
EC number
852-506-3
Molecular formula
C3H4N2O
UNII
C658O375NL
MDL number
MFCD00040252
InChIKey
AICIYIDUYNFPRY-UHFFFAOYSA-N
InChI
InChI=1S/C3H4N2O/c6-3-4-1-2-5-3/h1-2H,(H2,4,5,6)
SMILES (canonical and isomeric)
C1=CNC(=O)N1

Synonyms

  • 1,3-Dihydroimidazol-2-one
  • 4-Imidazolin-2-one
  • 1,3-Dihydro-2H-imidazol-2-one
  • Shell SD-8591
  • 2H-imidazol-2-one, 1,3-dihydro-
  • SD 8591
  • 2,3-dihydro-1H-imidazol-2-one
  • hydroxy imidazole
  • Pretomanid metabolite m50
  • 5-24-01-00299 (Beilstein Handbook Reference)
  • Dihydroimidazol-2-one, 1,3-
  • 2H-Imidazol-2-one, 1,3-dihydro-(9CI)
  • 1H-imidazol-2(3H)-one
  • 1H-Imidazol-2-ol
  • hydroxyimidazole
  • 1,3-Dihydro-imidazol-2-one
  • dihydroimidazolone
  • Imidazol-2-ol
  • XJV
  • 2,3-dihydro-1H-imida
  • 2(1H,3H)-imidazolone
  • 1,3-dihydro-2H-imidazol-2one
  • 2H-Imidazol-2-one,3-dihydro-
  • 1,3-Dihydro-2H-imidazol-2-one, AldrichCPR

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
84.08 g/molcalc.
Exact mass
84.0324 Dacalc.
LogP (octanol/water)
-0.3calc.
Topological polar surface area
48.65 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
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]cc[nH]1

O=c1[nH]cc[nH]1

1 ring, 6 atoms. This chemical is the scaffold itself.

220 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H314Causes severe skin burns and eye damage.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H360DMay damage the unborn child.
Precautionary statements (28)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • 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.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • 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.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • 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.
  • P363Wash contaminated clothing 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

2-Hydroxyimidazole suppliers

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

All 13 suppliers
13 of 13 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

13 suppliers in 6 countries

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2-Hydroxyimidazole 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

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-Hydroxyimidazole is traded under.

HS 2933.29Indicative HS code

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

World exports in 2024
$1.43B
−7.6% vs 2023, imports $1.47B
2019 to 2024
Top exporters
  1. China28.1%
  2. France * partner reported12.7%
  3. India * partner reported10.3%
Top importers
  1. United Kingdom13.0%
  2. United States7.9%
  3. China6.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is 2-Hydroxyimidazole?

1,3-dihydro-2H-imidazol-2-one is an imidazolinone.

What is the CAS number of 2-Hydroxyimidazole?

The CAS registry number of 2-Hydroxyimidazole is 5918-93-4. Other or deprecated CAS numbers: 82358-14-3.

What is the molecular formula and weight of 2-Hydroxyimidazole?

The molecular formula of 2-Hydroxyimidazole is C3H4N2O and its molar mass is 84.08 g/mol.

What is 2-Hydroxyimidazole used for?

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

Is 2-Hydroxyimidazole hazardous?

2-Hydroxyimidazole carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes severe skin burns and eye damage, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Hydroxyimidazole?

2-Hydroxyimidazole is usually classified under HS code 293329 (Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Hydroxyimidazole?

CompoundList lists 13 suppliers of 2-Hydroxyimidazole in China, United States, Canada, Hong Kong and 2 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 2-Hydroxyimidazole?

Suppliers quote 2-Hydroxyimidazole 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-Hydroxyimidazole

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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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