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ChemicalBook >> CAS DataBase List >> 2-Methyl-1,3-cyclopentanedione

2-Methyl-1,3-cyclopentanedione

2-Methyl-1,3-cyclopentanedione price.
  • $6 - $1120
  • Product name: 2-Methyl-1,3-cyclopentanedione
  • CAS: 765-69-5
  • MF: C6H8O2
  • MW: 112.13
  • EINECS:212-153-2
  • MDL Number:MFCD00001406
  • Synonyms:2-Methyl-1,3-cyclopentadione;2-METHYLCYCLOPENTAN-1,3-DIONE;2-METHYL-1,3-CYCLOPENTANEDIONE;METHYLCYCLE-D;2-Methylcyclopentane-1,3-dione,98%;2-METHYL-1,3-CYCLOPENTANEDIONE(METHYLCYCLO-D);2-Methyl-1,3-cyclopentanediolne;2-Methyl-1,3-dioxocyclopentane
Price78 Properties Safety Information Description
78 prices
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Brand
  • aablocks
  • AHH
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  • Manufactureraablocks
  • Product numberAA0033B1
  • Product description2-Methyl-1,3-cyclopentanedione ≥97%
  • Packaging5g
  • Price$10
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0033B1
  • Product description2-Methyl-1,3-cyclopentanedione ≥98%
  • Packaging25g
  • Price$15
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0033B1
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging100g
  • Price$53
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0033B1
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging500g
  • Price$197
  • Updated2026-05-28
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  • ManufacturerAHH
  • Product numberMT-17699
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging250g
  • Price$490
  • Updated2026-05-26
  • Buy
  • ManufacturerAK Scientific
  • Product numberH067
  • Product description2-Methyl-1,3-cyclopentanedione >99%(GC)
  • Packaging500g
  • Price$321
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ94478
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging500g
  • Price$240
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberH067
  • Product description2-Methyl-1,3-cyclopentanedione >99%(GC)
  • Packaging100g
  • Price$75
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ94478
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging100g
  • Price$56
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberH067
  • Product description2-Methyl-1,3-cyclopentanedione >99%(GC)
  • Packaging25g
  • Price$29
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ94478
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging5g
  • Price$12
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberH067
  • Product description2-Methyl-1,3-cyclopentanedione >99%(GC)
  • Packaging5g
  • Price$16
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ94478
  • Product description2-Methyl-1,3-cyclopentanedione 97%
  • Packaging25g
  • Price$22
  • Updated2026-06-04
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  • ManufacturerAmbeed
  • Product numberA191905
  • Product description2-Methylcyclopentane-1,3-dione 97%
  • Packaging25g
  • Price$26
  • Updated2026-06-05
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  • ManufacturerAmbeed
  • Product numberA191905
  • Product description2-Methylcyclopentane-1,3-dione 97%
  • Packaging10g
  • Price$20
  • Updated2026-06-05
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  • ManufacturerAmbeed
  • Product numberA191905
  • Product description2-Methylcyclopentane-1,3-dione 97%
  • Packaging5g
  • Price$15
  • Updated2026-06-05
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA0033B1 2-Methyl-1,3-cyclopentanedione ≥97% 5g $10 2026-05-28 Buy
aablocks AA0033B1 2-Methyl-1,3-cyclopentanedione ≥98% 25g $15 2026-05-28 Buy
aablocks AA0033B1 2-Methyl-1,3-cyclopentanedione 97% 100g $53 2026-05-28 Buy
aablocks AA0033B1 2-Methyl-1,3-cyclopentanedione 97% 500g $197 2026-05-28 Buy
AHH MT-17699 2-Methyl-1,3-cyclopentanedione 97% 250g $490 2026-05-26 Buy
AK Scientific H067 2-Methyl-1,3-cyclopentanedione >99%(GC) 500g $321 2026-06-04 Buy
AK Scientific J94478 2-Methyl-1,3-cyclopentanedione 97% 500g $240 2026-06-04 Buy
AK Scientific H067 2-Methyl-1,3-cyclopentanedione >99%(GC) 100g $75 2026-06-04 Buy
AK Scientific J94478 2-Methyl-1,3-cyclopentanedione 97% 100g $56 2026-06-04 Buy
AK Scientific H067 2-Methyl-1,3-cyclopentanedione >99%(GC) 25g $29 2026-06-04 Buy
AK Scientific J94478 2-Methyl-1,3-cyclopentanedione 97% 5g $12 2026-06-04 Buy
AK Scientific H067 2-Methyl-1,3-cyclopentanedione >99%(GC) 5g $16 2026-06-04 Buy
AK Scientific J94478 2-Methyl-1,3-cyclopentanedione 97% 25g $22 2026-06-04 Buy
Ambeed A191905 2-Methylcyclopentane-1,3-dione 97% 25g $26 2026-06-05 Buy
Ambeed A191905 2-Methylcyclopentane-1,3-dione 97% 10g $20 2026-06-05 Buy
Ambeed A191905 2-Methylcyclopentane-1,3-dione 97% 5g $15 2026-06-05 Buy
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Properties

Melting point :212-215 °C (lit.)
Boiling point :213°C (estimate)
Density :1.0795 (rough estimate)
refractive index :1.4550 (estimate)
storage temp. :Store below +30°C.
solubility :Solubility in hot Methanol (almost transparency).
pka :10.83±0.20(Predicted)
form :Crystalline Powder
color :Light beige to tan
PH :2.95 at 24.7℃ and 10g/L
BRN :1237255
InChI :1S/C6H8O2/c1-4-5(7)2-3-6(4)8/h4H,2-3H2,1H3
InChIKey :HXZILEQYFQYQCE-UHFFFAOYSA-N
SMILES :CC1C(=O)CCC1=O
LogP :-0.8 at 30℃ and pH7.66
CAS DataBase Reference :765-69-5(CAS DataBase Reference)
NIST Chemistry Reference :1,3-Cyclopentanedione, 2-methyl-(765-69-5)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

2-Methylcyclopentane-1,3-dione is an efficient synthon for the synthesis of (±)-α-cuparenone. The alkylation of 2-methylcyclopentane-1,3-dione (A) with 2-(1-naphthyl)ethyl bromide gives only the O-alkylation product. Mixtures of C- and O-alkyl derivatives are obtained. Michael addition of 2-methylcyclopentane-1,3-dione to methyl vinyl ketone in water gives 2-methyl-2-(3-oxo- butyl)-1,3-cyclopentanedione (3), an important intermediate of natural product chemistry. 2-Methylcyclopentane-1, 3-dione is an efficient synthon for the synthesis of (±)-α-cuparenone.

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Suppliers and manufacturers

Shandong Huasheng High-tech Industry Co., LTD J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd. INTATRADE GmbH Alfa Aesar TCI (Shanghai) Development Co., Ltd. ShangHai DEMO Chemical Co.,Ltd Energy Chemical Capot Chemical Co., Ltd Beijing Ouhe Technology Co., Ltd