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192188-42-4

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192188-42-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 192188-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,2,1,8 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 192188-42:
(8*1)+(7*9)+(6*2)+(5*1)+(4*8)+(3*8)+(2*4)+(1*2)=154
154 % 10 = 4
So 192188-42-4 is a valid CAS Registry Number.

192188-42-4Relevant articles and documents

Enantioselective formation of quaternary stereocenters using the catalytic intramolecular Stetter reaction

Moore, Jennifer L.,Kerr, Mark S.,Rovis, Tomislav

, p. 11477 - 11482 (2007/10/03)

Asymmetric formation of quaternary stereocenters has been accomplished using the catalytic intramolecular Stetter reaction. A?variety of tethered aldehydes and Michael acceptors are cyclized in excellent yields and enantioselectivities.

Direct alkynyl group transfer from silicon to copper: New preparation method of alkynylcopper (I) reagents

Ito, Hajime,Arimoto, Kikuo,Sensui, Hiro-Omi,Hosomi, Akira

, p. 3977 - 3980 (2007/10/03)

A first observation of the direct alkynyl group transfer from silicon to copper is reported. The silicon group of alkynylsilanes was smoothly replaced by copper (I) chloride in DMI to give the corresponding copper (I) acetylides. This transformation was a

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