Cas 656831-07-1,Cyclopenta[b]pyran-5-carboxylic acid, 2,3,4,5,6,7-hexahydro-7-oxo-, methyl ester (9CI)

656831-07-1

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Basic information

Product Name: Cyclopenta[b]pyran-5-carboxylic acid, 2,3,4,5,6,7-hexahydro-7-oxo-, methyl ester (9CI)
Synonyms: Cyclopenta[b]pyran-5-carboxylic acid, 2,3,4,5,6,7-hexahydro-7-oxo-, methyl ester (9CI)
CAS NO:656831-07-1
Molecular Formula: C10H12O4
Molecular Weight: 196.19988
EINECS: N/A
Product Categories: CYCLOPENTANE
Mol File: 656831-07-1.mol

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: /
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: Cyclopenta[b]pyran-5-carboxylic acid, 2,3,4,5,6,7-hexahydro-7-oxo-, methyl ester (9CI)(CAS DataBase Reference)
NIST Chemistry Reference: Cyclopenta[b]pyran-5-carboxylic acid, 2,3,4,5,6,7-hexahydro-7-oxo-, methyl ester (9CI)(656831-07-1)
EPA Substance Registry System: Cyclopenta[b]pyran-5-carboxylic acid, 2,3,4,5,6,7-hexahydro-7-oxo-, methyl ester (9CI)(656831-07-1)

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: 656831-07-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 656831-07-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,6,8,3 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 656831-07:
(8*6)+(7*5)+(6*6)+(5*8)+(4*3)+(3*1)+(2*0)+(1*7)=181
181 % 10 = 1
So 656831-07-1 is a valid CAS Registry Number.

656831-07-1Upstream product

922-67-8 propynoic acid methyl ester

656831-07-1Downstream Products

656831-07-1Relevant academic research and scientific papers

New Fischer Carbene Complexes of Rhodium(I): Preparation and 2-Cyclopentenone Ring Synthesis by Annelation to Alkynes

Barluenga, Jose,Vicente, Ruben,Lopez, Luis A.,Rubio, Eduardo,Tomas, Miguel,Alvarez-Rua, Carmen

, p. 470 - 471 (2004)

A new type of metal carbene complexes of group 9, specifically a cationic Fischer carbene of rhodium(I), has been synthesized from chromium carbene complexes via double transfer of carbene and CO ligands. These complexes reveal a different reactivity than other transition metal carbenes, including their chromium precursors, toward neutral and electron-poor alkynes, giving selectively polysubstituted cyclopentenones. Copyright

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