Cas 21746-98-5,(3aR,6aS)-3-Oxo-tetrahydro-cyclopenta[c]furan-3a-carboxylic acid ethyl ester

21746-98-5

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Basic information

Product Name: (3aR,6aS)-3-Oxo-tetrahydro-cyclopenta[c]furan-3a-carboxylic acid ethyl ester
Synonyms:
CAS NO:21746-98-5
Molecular Formula:
Molecular Weight: 198.219
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: (3aR,6aS)-3-Oxo-tetrahydro-cyclopenta[c]furan-3a-carboxylic acid ethyl ester(CAS DataBase Reference)
NIST Chemistry Reference: (3aR,6aS)-3-Oxo-tetrahydro-cyclopenta[c]furan-3a-carboxylic acid ethyl ester(21746-98-5)
EPA Substance Registry System: (3aR,6aS)-3-Oxo-tetrahydro-cyclopenta[c]furan-3a-carboxylic acid ethyl ester(21746-98-5)

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: 21746-98-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 21746-98-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,4 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21746-98:
(7*2)+(6*1)+(5*7)+(4*4)+(3*6)+(2*9)+(1*8)=115
115 % 10 = 5
So 21746-98-5 is a valid CAS Registry Number.

21746-98-5Upstream product

1906-96-3 diethyl (4-pentenyl)malonate

21746-98-5Downstream Products

21746-98-5Relevant academic research and scientific papers

OXIDATIVE DEPROTONATION OF CARBONYL COMPOUNDS BY Fe(III) SALTS

Citterio, Attilio,Cerati, Anna,Sebastiano, Roberto,Finzi, Claudia,Santi, Roberto

, p. 1289 - 1292 (2007/10/02)

Iron (III) salts (perchlorate and nitrate nonahydrate) in acetonitrile or acetic anhydride at 0-50 deg C oxidize the α-position of malonic esters efficiently via the corresponding radicals.In the presence of olefins and aromatics, inter- and intramolecular free radical chain or oxidative additions are observed.

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