3-Methylcyclopentanone

CAS NO.：1757-42-2
Empirical Formula: C6H10O
Molecular Weight: 98.14
MDL number: MFCD00001416
EINECS: 217-148-9
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 05:50:11

What is 3-Methylcyclopentanone?

Chemical properties

CLEAR SLIGHTLY YELLOW LIQUID

The Uses of 3-Methylcyclopentanone

3-Methylcyclopentanone is a metabolite used for the synthesis of various pharmaceutical derivatives and was found to be a degredation product of Phytosterols.

Synthesis Reference(s)

Journal of the American Chemical Society, 110, p. 291, 1988 DOI: 10.1021/ja00209a048
The Journal of Organic Chemistry, 51, p. 537, 1986 DOI: 10.1021/jo00354a027
Tetrahedron Letters, 21, p. 1247, 1980 DOI: 10.1016/S0040-4039(00)71383-9

General Description

3-Methylcyclopentanone is a monocyclic ketone and its optical rotatory dispersion has been studied under isolated and solvated conditions to explore the role of ring size/morphology. The vibrationally resolved electronic circular dichroism (ECD) spectra of (R)-(+)-3-methylcyclopentanone in gas phase was evaluated by density functional theory.

Properties of 3-Methylcyclopentanone

Melting point:	-58℃
Boiling point:	145 °C(lit.)
Density	0.913 g/mL at 25 °C(lit.)
refractive index	n20/D 1.434(lit.)
Flash point:	98 °F
storage temp.	Flammables area
solubility	Chloroform (Slightly), Ethyl Acetate (Slightly)
form	Liquid
color	Clear slightly yellow
Water Solubility	soluble
BRN	1305074
CAS DataBase Reference	1757-42-2(CAS DataBase Reference)
NIST Chemistry Reference	Cyclopentanone, 3-methyl-(1757-42-2)
EPA Substance Registry System	Cyclopentanone, 3-methyl- (1757-42-2)

Safety information for 3-Methylcyclopentanone

Signal word	Warning
Pictogram(s)	Flame Flammables GHS02
GHS Hazard Statements	H226:Flammable liquids
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.