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2-hydroxycyclopent-2-en-1-one

2-hydroxycyclopent-2-en-1-one Structure
2-hydroxycyclopent-2-en-1-one structure
CAS No.
10493-98-8
Chemical Name:
2-hydroxycyclopent-2-en-1-one
Synonyms
2-Cyclopenten-1-one, 2-hydroxy-;2-Hydroxy-2-cyclopenten-1-one;Einecs 234-020-8;2-Hydroxycyclopent-2-enone;2-Hydroxy-2-cyclopentenone;2-hydroxycyclopent-2-en-1-one;1-Hydroxy-1-cyclopenten-5-one
CBNumber:
CB8942124
Molecular Formula:
C5H6O2
Molecular Weight:
98.1
MDL Number:
MFCD16251523
MOL File:
10493-98-8.mol
MSDS File:
SDS
Last updated:2026-05-28 03:55:57
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2-hydroxycyclopent-2-en-1-one Properties

Melting point 52-53℃
Boiling point 245℃
Density 1.334
Flash point 101℃
storage temp. 2-8°C
solubility DMSO (Slightly), Methanol (Slightly)
form Solid
pka 8.90±0.20(Predicted)
color Brown to Very Dark Brown
Odor at 0.10 % in propylene glycol. maple caramel
Odor Type caramellic
InChI InChI=1S/C5H6O2/c6-4-2-1-3-5(4)7/h2,6H,1,3H2
InChIKey WOPKYMRPOKFYNI-UHFFFAOYSA-N
SMILES C1(=O)CCC=C1O
LogP -0.290 (est)
FDA UNII DQ8L4K1DLJ

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  warning
Hazard statements  H315-H319-H335
Precautionary statements  P264-P280-P302+P352-P321-P332+P313-P362-P305+P351+P338-P337+P313-P261-P271-P304+P340-P312-P403+P233-P405-P501

2-hydroxycyclopent-2-en-1-one price More Price(47)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TCI Chemical H1874 2-Hydroxycyclopent-2-en-1-one min. 95.0 % 10493-98-8 200MG $91 2026-04-30 Buy
TCI Chemical H1874 2-Hydroxycyclopent-2-en-1-one min. 95.0 % 10493-98-8 1G $273 2026-04-30 Buy
Biosynth FH143792 2-Hydroxycyclopent-2-enone 10493-98-8 0.1g $900 2026-06-04 Buy
Biosynth FH143792 2-Hydroxycyclopent-2-enone 10493-98-8 2g $900 2026-06-04 Buy
Biosynth FH143792 2-Hydroxycyclopent-2-enone 10493-98-8 1g $900 2026-06-04 Buy
Product number Packaging Price Buy
H1874 200MG $91 Buy
H1874 1G $273 Buy
FH143792 0.1g $900 Buy
FH143792 2g $900 Buy
FH143792 1g $900 Buy

2-hydroxycyclopent-2-en-1-one Chemical Properties,Uses,Production

Uses

2-Hydroxycyclopent-2-en-1-one is a useful compound for preparing natural flavors.

Synthesis

CIS-1,2-CYCLOPENTANEDIOL

5057-98-7

2-hydroxycyclopent-2-en-1-one

10493-98-8

General procedure for the synthesis of 2-hydroxy-2-cyclopenten-1-one from cis-1,2-cyclopentanediol: cis-1,2-cyclopentanediol (0.424 mmol), Pt/C catalyst (1 or 5 mol% metal loading with respect to the diol), LiOH-H2O (1.0 equiv, 0.424 mmol) and solvent (2 mL, MeCN/H2O 1:1) were added to a 10 mL glass reactor equipped with a condenser and stirred at 60 °C for an appropriate time. The reaction progress was monitored by TLC. When product formation stopped, the catalyst was removed by filtration and washed with EtOAc (3 × 3 mL) to obtain a two-phase solution. The aqueous phase was acidified to pH 5 with 1 M HCl and the layers were separated. The aqueous layer was extracted twice with EtOAc (20 mL). All organic phases were combined, dried with MgSO4 and concentrated in vacuum. The crude product was purified by column chromatography (EtOAc/petroleum ether or MeOH/CH2Cl2) to afford the target product 2-hydroxy-2-cyclopenten-1-one, which is a keto-enol interconjugate isomer.

References

[1] Tetrahedron, 2014, vol. 70, # 22, p. 3608 - 3613

2-hydroxycyclopent-2-en-1-one Preparation Products And Raw materials

Raw materials

cis-1,2-Cyclopentanediol Acetonitrile Platinum Carbon Nanotube Water
Lithium hydroxide monohydrate

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Preparation Products

2-hydroxycyclopent-2-en-1-one Suppliers

Global( 96)Suppliers
Supplier Tel Email Country ProdList Advantage
QINGDAO CARELONGPHARMATECH CO.,LTD 053288191853 13061484198 sales@carelongchem.com China 455 57
Adamas Reagent, Ltd. 400-6009262 15618770481 yhx@titansci.com China 14098 59
Accela ChemBio Co.,Ltd. 021-50795510 4000665055 marketing@accelachem.com China 10972 64
Tongchuang Pharma(Suzhou). Co., Ltd. 0512-63263366 18912765016 tongtf110@sina.com China 984 62
DONGSHENG CHIRAL PHARMA 15800326364 18051538752 582512789@qq.com China 447 55
Bide Pharmatech Ltd. 400-164-7117 18317119277 product02@bidepharm.com China 40000 60
Shanghai HuanChuan Industry Co.,Ltd. 021-61478794 sales@hcshhai.com China 9781 50
skychemical Co.Ltd 021-20960837,QQ1332204249 sales@skychemical.com China 3338 55
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
Shanghai QianYan Bio-technology Co., Ltd 02781293128 orders@biochemsafebuy.com China 9904 55
Supplier Advantage
QINGDAO CARELONGPHARMATECH CO.,LTD 57
Adamas Reagent, Ltd. 59
Accela ChemBio Co.,Ltd. 64
Tongchuang Pharma(Suzhou). Co., Ltd. 62
DONGSHENG CHIRAL PHARMA 55
Bide Pharmatech Ltd. 60
Shanghai HuanChuan Industry Co.,Ltd. 50
skychemical Co.Ltd 55
Shanghai YuanYe Biotechnology Co., Ltd. 60
Shanghai QianYan Bio-technology Co., Ltd 55

View Lastest Price from 2-hydroxycyclopent-2-en-1-one manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-hydroxycyclopent-2-en-1-one pictures 2026-06-30 2-hydroxycyclopent-2-en-1-one
10493-98-8
 1kg 99% 10000KGS Shaanxi Dideu New Materials Co. Ltd

2-hydroxycyclopent-2-en-1-one Spectrum

2-hydroxycyclopent-2-en-1-one(10493-98-8)1HNMR

10493-98-8(2-hydroxycyclopent-2-en-1-one)Related Search:

Methyl cyclopentenolone 3-Ethyl-2-hydroxy-2-cyclopenten-1-one 3-Methoxy-2-cyclopenten-1-one 3-hydroxycyclopent-2-en-1-one 2-Cyclopenten-1-one,2-methoxy-(6CI,8CI,9CI)
3-bromo-2-hydroxycyclopent-2-en-1-one

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2-hydroxycyclopent-2-en-1-one 2-Hydroxy-2-cyclopenten-1-one Einecs 234-020-8 1-Hydroxy-1-cyclopenten-5-one 2-Hydroxy-2-cyclopentenone 2-Hydroxycyclopent-2-enone 2-Cyclopenten-1-one, 2-hydroxy- 10493-98-8 10493-98-9