Cas 1260435-20-8,(4R)-ethyl 4-(4-fluorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

1260435-20-8

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Basic information

Product Name: (4R)-ethyl 4-(4-fluorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate
Synonyms: (4R)-ethyl 4-(4-fluorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate
CAS NO:1260435-20-8
Molecular Formula:
Molecular Weight: 384.361
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: (4R)-ethyl 4-(4-fluorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate(CAS DataBase Reference)
NIST Chemistry Reference: (4R)-ethyl 4-(4-fluorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate(1260435-20-8)
EPA Substance Registry System: (4R)-ethyl 4-(4-fluorophenyl)-2-hydroxy-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate(1260435-20-8)

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: 1260435-20-8(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 1260435-20-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,0,4,3 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1260435-20:
(9*1)+(8*2)+(7*6)+(6*0)+(5*4)+(4*3)+(3*5)+(2*2)+(1*0)=118
118 % 10 = 8
So 1260435-20-8 is a valid CAS Registry Number.

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1260435-20-8Relevant academic research and scientific papers

Enantioselective synthesis of coumarins catalyzed by a bifunctional amine-thiourea catalyst

Gao, Yaojun,Ren, Qiao,Wang, Lei,Wang, Jian

, p. 13068 - 13071 (2010)

Efficient excess: An efficient and facile enantioselective Michael addition reaction through hydrogen-bonding catalysis for the synthesis of coumarin complexes has been developed (see scheme). A simple bifunctional amine-thiourea small molecule has been discovered to catalyze this process with high yields and high to excellent enantiomeric excesses.

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