Cas 139287-48-2,8H-2-Benzopyran-8-one, 3,4,4a,5-tetrahydro-5,5-dimethyl-3-(3,4,5-trimethoxyphenyl)-, trans-

139287-48-2

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Basic information

Product Name: 8H-2-Benzopyran-8-one, 3,4,4a,5-tetrahydro-5,5-dimethyl-3-(3,4,5-trimethoxyphenyl)-, trans-
Synonyms:
CAS NO:139287-48-2
Molecular Formula: C20H24O5
Molecular Weight: 344.408
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: 8H-2-Benzopyran-8-one, 3,4,4a,5-tetrahydro-5,5-dimethyl-3-(3,4,5-trimethoxyphenyl)-, trans-(CAS DataBase Reference)
NIST Chemistry Reference: 8H-2-Benzopyran-8-one, 3,4,4a,5-tetrahydro-5,5-dimethyl-3-(3,4,5-trimethoxyphenyl)-, trans-(139287-48-2)
EPA Substance Registry System: 8H-2-Benzopyran-8-one, 3,4,4a,5-tetrahydro-5,5-dimethyl-3-(3,4,5-trimethoxyphenyl)-, trans-(139287-48-2)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 139287-48-2(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 139287-48-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,8 and 7 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139287-48:
(8*1)+(7*3)+(6*9)+(5*2)+(4*8)+(3*7)+(2*4)+(1*8)=162
162 % 10 = 2
So 139287-48-2 is a valid CAS Registry Number.

139287-48-2Upstream product

139287-48-2Downstream Products

139287-48-2Relevant academic research and scientific papers

A convenient synthesis of 3-substituted-5,5-dimethyltetrahydro-2-benzopyran-8-ones through hetero-Diels-Alder reaction

Desai,Gore,Bhat

, p. 97 - 105 (1992)

2-Formyl-4,4-dimethylcyclohexa-2,5-dien-1-one undergoes hetero-Diels-Alder reactions with electron-rich olefins to yield 3-substituted-5,5-dimethyl-3,4,4a,5-tetrahydro-8H-2-benzopyrane-8- ones. The endo addition is favoured.

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