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67957-89-5

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67957-89-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67957-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,9,5 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 67957-89:
(7*6)+(6*7)+(5*9)+(4*5)+(3*7)+(2*8)+(1*9)=195
195 % 10 = 5
So 67957-89-5 is a valid CAS Registry Number.

67957-89-5Relevant articles and documents

Allyl sulfones as precursors to allylzincs in the palladium-catalyzed zinc-ene cyclization: Highly efficient synthesis of enantiopure (-)-erythrodiene

Deng, Kai,Chalker, Justin,Yang, Ao,Cohen, Theodore

, p. 3637 - 3640 (2007/10/03)

(Chemical Equation Presented) Easily prepared allyl phenyl sulfones, capable of introduction of the alkene by electrophilic α-substitution, are superior to allyl acetates as substrates for Pd-catalyzed Zn-ene cyclizations, providing C5 or C4N r

Synthesis of an Unstable Allyl Sulphide from an Allyl Phosphine Oxide

Torr, Richard S.,Warren, Stuart

, p. 1169 - 1172 (2007/10/02)

The epoxide (8) reacts with PhSLi to give Horner-Wittig intermediate (9) and hence the allyl sulphide (10).The stereochemistry and reactions of the intermediates are described.

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