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CAS No 500-05-0 , 6-oxopyran-3-carboxylic acid

  • Name: 6-oxopyran-3-carboxylic acid
  • Synonyms: 2H-Pyran-5-carboxylic acid; 500-05-0; 2-Oxopyran-5-carboxylic acid;6-oxopyran-3-carboxylic acid; 2-oxo-; Cumalic acid;2-Oxo-2H-pyran-5-carboxylic acid;
  • CAS Registry Number:
  • Melting Point: 203-205 ºC (DEC.)
  • Flash Point: 137.3°C
  • Boiling Point: 218 ºC (120 MMHG)
  • Density: 1.542g/cm3
  • Safety Statements: S22;S24/25
  • Hazard Symbols: Xi
  • Flash Point: 137.3°C
  • EINECS: 207-899-0
  • Molecular Weight: 140.09356
  • InchiKey: ORGPJDKNYMVLFL-UHFFFAOYSA-N
  • InChI: InChI=1S/C6H4O4/c7-5-2-1-4(3-10-5)6(8)9/h1-3H,(H,8,9)
  • Risk Statements: S22;S24/25
  • Molecular Formula: C6H4O4
  • Molecular Structure:CAS No:500-05-0 6-oxopyran-3-carboxylic acid
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500-05-0 Coumalic Acid

  • China Chemrio International Limited [Manufacturer]
  • Tel: +86 574 2789 1268/ +86-139 5789 5864 (mobile)
  • Fax: +86 574 2789 1266
  • Address: Chemrio International Limited
    Room 611-612, Wante Business Center
    No.487 Yangmuqi Road,
    Hi-tech Park Ningbo, 315040,China null,nullChina
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500-05-0 Coumalic Acid

  • China Trust&We Co., Ltd. [Manufacturer]
  • Tel: +86-21-61044582
  • Fax: +86-21-61044583
  • Address: 1-102,No.11,Dongjiaominxiang Alley,
    Dongcheng District,
    Beijing 100005,China null,nullChina
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500-05-0 Coumalic acid

  • Coumalic acid
  • China Shanghai Synnad Chemical Co., Ltd. [Importer/Exporter]
  • Tel: 86 21 5109 7911
  • Fax: 86 21 5109 7955
  • Address: B-5 Ecust Science Park, No. 18, Lane 1305, Hua Jing Road, Shanghai 200231 China Shanghai,ShanghaiChina
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500-05-0 Coumalic Acid

  • China Hangzhou Sage Chemical Co., Ltd. [Manufacturer]
  • Tel: +86-571-86818502
  • Fax: +86-571-86818503
  • Address: RM501 Tower A, New Youth Plaza, NO.8 Jia Shan Road, Hangzhou, Zhejiang 310014, null,ZhejiangChina
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500-05-0 Coumalic Acid

  • China Shanghai Xunxin Chemical Co., Ltd [Manufacturers]
  • Tel: +86-(21)-38218795
  • Fax: +86-(21)-38218795
  • Address: 580 Lane, Kanghong Road, Pudong New District, Shanghai 201315, Shanghai,ShanghaiChina
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500-05-0 3-Chloroperoxybenzoic acid

  • 3-Chloroperoxybenzoic acid, 99%
  • China Changchem [Manufacturer]
  • Tel: +86 513 8515 5236
  • Fax: +86 513 8515 2292
  • Address: 7th Floor76 Yue Long Road226001 Nantong null,nullChina
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500-05-0 Coumalic acid

  • Hong kong Achemo Sientific cooperation [Manufacturers]
  • Tel: 00852-39711547
  • Fax: 00852-39711547
  • Address: 38 Plaza,38 Shantung street,MongKoK,kowloon,Hongkong Kowloon,KowloonHong kong
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500-05-0 Coumalic Acid

  • China China Langchem Inc. null
  • Tel: +86-(21)-58956006
  • Fax: +86-(21)-58956100
  • Address: 514 Room, 1# Building, 88# Cailun Road, Zhangjiang High Tech Park, Shanghai 201203, null,nullChina
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500-05-0 Coumalic Acid

  • China Watson International Ltd. null
  • Tel: +86-(512)-55117610
  • Fax: +86-(512)-55117630
  • Address: Room 1209, Asia Pacific Plaza, Huaqiao International Business Park, Kunshan, Jiangsu 215332, null,nullChina
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500-05-0 coumalic acid

  • coumalic acid, 98%
  • China hangzhou Titan Chemical Co.,Ltd [Importer/Exporter]
  • Tel: 86 571 86838498
  • Fax: 86 571 86838499
  • Address: 32 Qingqun road, Hangzhou, Zhejiang, China Hangzhou,ZhejiangChina
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References of 6-oxopyran-3-carboxylic acid
Title: Coumalic Acid
CAS Registry Number: 500-05-0
CAS Name: 2-Oxo-1,2H-pyran-5-carboxylic acid
Synonyms: a-pyrone-5-carboxylic acid
Molecular Formula: C6H4O4
Molecular Weight: 140.09
Percent Composition: C 51.44%, H 2.88%, O 45.68%
Literature References: Prepd by heating anhydr malic acid with oleum: v. Pechmann, Ann. 264, 262, 272 (1891); Wiley, Smith, Org. Synth. coll. vol. IV, 201 (1963).
Properties: Bright yellow prisms from methanol, mp 205-210° (partial decompn). bp120 218°; sublimes partially. Sparingly sol in cold water. Dec by boiling water. Sol in alcohol, glacial acetic acid. Slightly sol in ether, acetone, ethyl acetate. Insol in chloroform, benzene, ligroin.
Melting point: mp 205-210° (partial decompn)
Boiling point: bp120 218°
 
Derivative Type: Methyl ester
Molecular Formula: C7H6O4
Molecular Weight: 154.12
Percent Composition: C 54.55%, H 3.92%, O 41.52%
Properties: Leaflets from ligroin, mp 73-74°. bp60 178-180°. bp760 250-260°.
Melting point: mp 73-74°
Boiling point: bp60 178-180°; bp760 250-260°
 
Derivative Type: Ethyl ester
Molecular Formula: C8H8O4
Molecular Weight: 168.15
Percent Composition: C 57.14%, H 4.80%, O 38.06%
Properties: Crystals, mp 36°. bp760 262-265°. Distills without decompn.
Melting point: mp 36°
Boiling point: bp760 262-265°