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190258-60-7

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190258-60-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190258-60-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,2,5 and 8 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 190258-60:
(8*1)+(7*9)+(6*0)+(5*2)+(4*5)+(3*8)+(2*6)+(1*0)=137
137 % 10 = 7
So 190258-60-7 is a valid CAS Registry Number.

190258-60-7Relevant articles and documents

Stereoselective hydrogen transfer reactions of vinyl radicals: Cyclization of alkynyl iodides by unimolecular chain transfer from silicon hydrides

Martinez-Grau, Angeles,Curran, Dennis P.

, p. 5679 - 5698 (2007/10/03)

The cyclization of several substituted hexynyl and heptynyl iodides proceeds stereoselectively to give either E- or Z-exocyclic double bonds depending on the type of precursor and radical chain used, In UniMolecular Chain Transfer (UMCT) reactions, the intramolecular abstraction of hydrogen by the intermediate vinyl radical leads exclusively to the E-isomer while the traditional tin hydride method usually provides the Z-isomer with good selectivity.

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