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ChemicalBook--->CAS DataBase List--->21835-01-8

21835-01-8

21835-01-8 Structure

21835-01-8 Structure
IdentificationMore
[Name]

3-Ethyl-2-hydroxy-2-cyclopenten-1-one
[CAS]

21835-01-8
[Synonyms]

3-ETHYL-2-CYCLPENTEN-2-OL-1-ONE
3-ETHYL-2-HYDROXY-2-CYCLOPENTEN-1-ONE
3-ETHYL-HYDROXY-2-CYCLOPENTEN-1-ONE
ETHYL CYCLOPENTENOLONE
FEMA 3152
2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-
2-Cyclopenten-1-one,3-ethyl-2-hydroxy-(7CI,8CI,9CI)
3-ethyl-2-hydroxy-2-cyclopenten-1-on
3-Ethyl-2-hydroxy-2-cyclopenten-1-one solution
3-ethyl-2-hydroxycyclopent-2-en-1-one
ISOVALERIC ACID 99+% FCC
3-ETHYL-2-HYDROXY-2-CYCLOPENTEN-1-ONE, 5 0 WT. % SOLUTION IN PROPYLENE GLYCOL
3-ETHYL-2-HYDROXY-2-CYCLOPENTENE-1-ONE
ETHYL CYCLOPENTENOLONE IN 50% P.G.
ETHYL CYCLOPENTENOLONE PURE
2-Hydroxy-3-ethyl-2-cyclopentene-1-one
[EINECS(EC#)]

244-606-5
[Molecular Formula]

C7H10O2
[MDL Number]

MFCD00012391
[Molecular Weight]

126.15
[MOL File]

21835-01-8.mol
Chemical PropertiesBack Directory
[Melting point ]

39.0 to 43.0 °C
[Boiling point ]

75°C/0.3mmHg(lit.)
[density ]

1.067 g/mL at 25 °C
[FEMA ]

3152
[refractive index ]

n20/D 1.476
[Fp ]

225 °F
[storage temp. ]

2-8°C
[solubility ]

soluble in Methanol,Ether
[form ]

powder to crystal
[pka]

9.17±0.20(Predicted)
[color ]

White to Orange to Green
[Odor]

at 1.00 % in propylene glycol. sweet caramel maple fenugreek
[biological source]

synthetic
[Odor Type]

caramellic
[JECFA Number]

419
[InChIKey]

JHWFWLUAUPZUCP-UHFFFAOYSA-N
[LogP]

0.83
[CAS DataBase Reference]

21835-01-8(CAS DataBase Reference)
[NIST Chemistry Reference]

2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-(21835-01-8)
[EPA Substance Registry System]

21835-01-8(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R20/22:Harmful by inhalation and if swallowed .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[WGK Germany ]

3
[HS Code ]

29144000
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Cyclopentene-->Dimethyl adipate
Hazard InformationBack Directory
[Chemical Properties]

3-Ethyl-2-hydroxy-2-cyclopenten-1-one has a caramel-like flavor. This compound is often employed to impart a caramel flavor or coconut notes in food. The compound exhibits flavor-enhancing characteristics.
[Definition]

ChEBI: 3-Ethyl-2-hydroxycyclopent-2-en-1-one is a cyclic ketone.
[Preparation]

From 5-methyl-3,5-dicarbethoxy-2-cyclopen-ten-2-ol-one and phosphoric acid; by a patented process; also from dimethyl adipate.
[Aroma threshold values]

Aroma characteristics at 0.5%: sweet, brown, caramellic, maple, brown sugar, rum, whiskey, furanone.
[Taste threshold values]

A threshold value of 5 ppm, similar to the 3-methyl analog, has been determined by comparative sensory evaluation. Taste characteristics at 12 ppm: sweet, jamy, fruity, brown, toasted, maple, nutty
[General Description]

3-Ethyl-2-hydroxy-2-cyclopenten-1-one is formed by thermal degradation of ascorbic acid. It is an aroma compound formed from the reactions of L-ascorbic acid with L-threonine/L-serine at different pH values.
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

21835-01-8(sigmaaldrich)
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