CAS No 99-32-1 , 4-oxopyran-2,6-dicarboxylic acid Search by region : Germany

Name: 4-oxopyran-2,6-dicarboxylic acid
Synonyms: Compound XI*; 99-32-1; Jerva acid; Jervasic acid;4-oxopyran-2,6-dicarboxylic acid;4-OXO-4H-PYRAN-2,6-DICARBOXYLIC ACID; 2,6-Dicarboxyl-4-pyrone; Jervaic acid;
CAS Registry Number:99-32-1
Melting Point: 265 ºC (DEC.)
Flash Point: 204.1 ºC
Boiling Point: 471.3 ºC at 760 mmHg
Density: 1.821 g/cm³
Safety Statements: R36/37/38
Hazard Symbols: Xi: Irritant;
Flash Point: 204.1 ºC
EINECS: 202-749-0
Molecular Weight: 184.10306
InchiKey: PBAYDYUZOSNJGU-UHFFFAOYSA-N
InChI: InChI=1S/C7H4O6/c8-3-1-4(6(9)10)13-5(2-3)7(11)12/h1-2H,(H,9,10)(H,11,12)
Risk Statements: S26;S36
Molecular Formula: C₇H₄O₆
Molecular Structure:

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References of 4-oxopyran-2,6-dicarboxylic acid

Title: Chelidonic Acid
CAS Registry Number: 99-32-1
CAS Name: 4-Oxo-4H-pyran-2,6-dicarboxylic acid
Synonyms: 4-oxo-1,4-pyran-2,6-dicarboxylic acid; Jerva acid; jervasic acid
Molecular Formula: C7H4O6
Molecular Weight: 184.10
Percent Composition: C 45.67%, H 2.19%, O 52.14%
Literature References: Presence in various plants: Stransky, Arch. Pharm. 258, 56 (1920); Ramstad, Pharm. Acta Helv. 28, 45 (1953). Structure: Verkade, Recl. Trav. Chim. Pays-Bas 43, 879 (1924). Synthesis: Riegel, Reinhard, J. Am. Chem. Soc. 48, 1334 (1926); Riegel, Zwilgmeyer, Org. Synth. coll. vol. II, 126 (1943); Toomey, Riegel, J. Org. Chem. 17, 1492 (1952).
Properties: Crystals, dec 257°. uv max (water): 270 nm (e 11500). One gram dissolves in 65 ml water, 26 ml boiling water. Sparingly sol in alc.
Absorption maximum: uv max (water): 270 nm (e 11500)

Derivative Type: Monohydrate
Properties: Monoclinic crystals from hot alcohol + water. The water of crystn is given up when heated at 102° and then at 160° to constant weight.

Derivative Type: Sodium salt
Properties: Sparingly sol in water.