Cas 491870-92-9,2-(2,3-dimethoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-dione

491870-92-9

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Basic information

Product Name: 2-(2,3-dimethoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-dione
Synonyms: 2-(2,3-dimethoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-dione
CAS NO:491870-92-9
Molecular Formula:
Molecular Weight: 310.306
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: 2-(2,3-dimethoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-dione(CAS DataBase Reference)
NIST Chemistry Reference: 2-(2,3-dimethoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-dione(491870-92-9)
EPA Substance Registry System: 2-(2,3-dimethoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-dione(491870-92-9)

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: 491870-92-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 491870-92-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,1,8,7 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 491870-92:
(8*4)+(7*9)+(6*1)+(5*8)+(4*7)+(3*0)+(2*9)+(1*2)=189
189 % 10 = 9
So 491870-92-9 is a valid CAS Registry Number.

491870-92-9Upstream product

77633-01-3 C₁₈H₁₆O₅

491870-92-9Downstream Products

491870-92-9Relevant academic research and scientific papers

Oxidative cyclization of 3-cinnamoyltropolones with I2/DMSO/ H2SO4 system

Gao, Wentao,Li, Yang,Zhang, Hong,Chang, Mingqin,Imafukub, Kimiaki

experimental part, p. 1107 - 1112 (2010/03/01)

(Chemical Equation Presented) In this study, a facile and general method synthesizing flavone-like 2-aryl-4,9-dihydrocyclohepta[b]-pyran-4,9-diones (2a-y) from 3-cinnamoyltropolones (1a-y) via oxidative cyclization reaction by using I2/DMSO/Hs

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