ChemicalBook--->CAS DataBase List--->137-18-8

137-18-8

137-18-8 Structure

137-18-8 Structure
IdentificationBack Directory
[Name]

P-XYLOQUINONE
[CAS]

137-18-8
[Synonyms]

Floron
PHLORONE
XYLOQUINONE
Metaphlorone
P-XYLOQUINONE
2,5-XYLOQUINONE
Phlorone-quinone
PARA-XYLOQUINONE
2,5-Dimethylquinone
DIMETHYLBENZOQUINONE
p-Xyloquinone
2,5-DIMETHYL-P-QUINONE
2,5-DIMETHYLBENZOQUINONE
2,5-dimethyl-p-benzoquinon
2,5-dimethyl-4-benzoquinone
3,6-Dimethyl-p-benzoquinone
2,5-DIMETHYL-P-BENZOQUINONE
2,5-Dimethyl-1,4-benzochinon
2,5-dimetilbenzochinone(1:4)
p-Benzoquinone, 2,5-dimethyl-
2,5-Dimetilbenzochinone (1:4)
2,5-Dimethylbenzo-1,4-quinone
2,5-DIMETHYL-1,4-BENZOQUINONE
2,5-DIMETHYL-PARA-BENZOQUINONE
2,5-Dimethyl-p-benzoquinone,99%
2,5-DiMethyl-p-benzoquinone, 99% 5GR
2,5-Dimethyl-1,4-benzoquinone >=98.0%
Benzoquinone, 2, 5-dimethyl-(phlorone)
4-dione,2,5-dimethyl-5-cyclohexadiene-1
2,5-Dimethyl-2,5-Cyclohexadiene-1,4-dione
2,5-Dimethylcyclohexa-2,5-diene-1,4-dione
2,5-Dimethyl-1,4-benzoquinone 2,5-Dimethyl-p-quinone Phlorone
[EINECS(EC#)]

205-283-6
[Molecular Formula]

C8H8O2
[MDL Number]

MFCD00041737
[MOL File]

137-18-8.mol
[Molecular Weight]

136.15
Chemical PropertiesBack Directory
[Appearance]

yellow to brown crystalline powder
[Melting point ]

123-125 °C
[Boiling point ]

69-80℃
[density ]

1.1150 (rough estimate)
[refractive index ]

1.5090 (estimate)
[storage temp. ]

2-8°C
[solubility ]

toluene: soluble0.5g/10 mL, clear to faintly turbid, yellow to brown
[form ]

Crystalline Powder
[color ]

Yellow to brown
[BRN ]

2041348
[CAS DataBase Reference]

137-18-8
[EPA Substance Registry System]

2,5-Cyclohexadiene-1,4-dione, 2,5-dimethyl- (137-18-8)
Hazard InformationBack Directory
[Chemical Properties]

yellow to brown crystalline powder
[Uses]

2,5-Dimethyl-1,4-benzoquinone may be used in a key step involved in the total synthesis of (?)-cyathin A3.
[Synthesis Reference(s)]

Synthetic Communications, 25, p. 1669, 1995 DOI: 10.1080/00397919508015851
The Journal of Organic Chemistry, 53, p. 5453, 1988 DOI: 10.1021/jo00258a010
[General Description]

2,5-Dimethyl-1,4-benzoquinone is a quinone derivative. Its reaction with jack bean urease in phosphate buffer, pH 7.8 has been studied. It is present as one of the component of defensive secretion of opilionid Acanthopachylus aculeatus. It has been investigated as inhibitor of jack bean urease in 50mM phosphate buffer, pH 7.0.
[Synthesis]

2,5-Dimethyl-p-benzoquinone was prepared as follows:
Method 1: 80 g of 2,5-dimethylphenol was added to 300 mL. Dimethylformamide in 500 ml. The resin kettle oxidizer is provided with an air inlet, stirrer, thermometer and reflux condenser. 2.5 g of
[Purification Methods]

Crystallise the quinone from EtOH. [Beilstein 7 IV 2090.]
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

22-36/37/38
[Safety Statements ]

26-37/39
[RIDADR ]

UN 2811 6.1/PG 3
[WGK Germany ]

3
[RTECS ]

DK4800000
[TSCA ]

TSCA listed
[HS Code ]

29146990
Spectrum DetailBack Directory
[Spectrum Detail]

P-XYLOQUINONE(137-18-8)MS
P-XYLOQUINONE(137-18-8)1HNMR
P-XYLOQUINONE(137-18-8)13CNMR
P-XYLOQUINONE(137-18-8)IR1
P-XYLOQUINONE(137-18-8)IR2
P-XYLOQUINONE(137-18-8)ESR
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