Cas 4281-20-3,'cis'-Biphthalidyliden

4281-20-3

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Basic information

Product Name: 'cis'-Biphthalidyliden
Synonyms:
CAS NO:4281-20-3
Molecular Formula:
Molecular Weight: 264.237
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: 'cis'-Biphthalidyliden(CAS DataBase Reference)
NIST Chemistry Reference: 'cis'-Biphthalidyliden(4281-20-3)
EPA Substance Registry System: 'cis'-Biphthalidyliden(4281-20-3)

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: 4281-20-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4281-20-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,8 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4281-20:
(6*4)+(5*2)+(4*8)+(3*1)+(2*2)+(1*0)=73
73 % 10 = 3
So 4281-20-3 is a valid CAS Registry Number.

4281-20-3Upstream product

4281-20-3Downstream Products

4281-20-3Relevant academic research and scientific papers

New coupling reactions of some acyl chlorides with samarium diiodide in the presence of samarium: Carbinols from three acyl units

Clausen, Christian,Weidner, Ingo,Butenschoen, Holger

, p. 3799 - 3806 (2000)

A mixture of samarium(II) iodide and samarium can induce a coupling reaction of three molecules of alkanoyl halide to give trialkylcarbinols of 2-hydroxy-1,3-diones. When aliphatic, unbranched alkanoyl chlorides are used, this new coupling reaction provides trimeric products as the main reaction products. Tetrahydropyran (THP) proved superior as the solvent because no ring-opening and subsequent reaction with the alkanoyl halides was observed under the reaction conditions, unlike when THF was used. Wiley-VCH Verlag GmbH, 2000.

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