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203631-72-5

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203631-72-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203631-72-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,6,3 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 203631-72:
(8*2)+(7*0)+(6*3)+(5*6)+(4*3)+(3*1)+(2*7)+(1*2)=95
95 % 10 = 5
So 203631-72-5 is a valid CAS Registry Number.

203631-72-5Relevant articles and documents

Synthesis of molecular chains: phenylene thioether and sulfoxide oligomers

Vicente, José,Abad, José A.,López-Nicolás, Rosa M.

, p. 6281 - 6288 (2008/09/21)

The application of a general synthetic approach to prepare molecular chains is reported. It is based on a step-by-step method each consisting first in a Pd-catalyzed reaction between ArI and HXAr′Br (Ar=aryl, Ar′=arylene) to give ArXAr′Br followed by a Cu

Functionalized p-phenylene sulfides synthesis of new molecular wires

Pinchart, Alain,Dallaire, Carol,Gingras, Marc

, p. 543 - 546 (2007/10/03)

Molecular wires containing p-phenylene sulfide units were synthesized. They could be used in material sciences and in supramolecular chemistry. Wires having 2 to 6 phenyl rings were functionalized at one end by an SH or SMe group, and at the other end, by an OH, OMe or OiPr groups. Formation of Ar-S bonds in the chain was achieved by Pd- or Cu-catalyzed couplings of aromatic thiols with aromatic halides. Conditions for a clean chemoselective deprotection of thiols from thiomethyl groups were developed.

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