Cas 75716-20-0,4-(tosyloxy)butyl 2-oxocyclododecyl sulfide

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Check Digit Verification of cas no

The CAS Registry Mumber 75716-20-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,7,1 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 75716-20:
(7*7)+(6*5)+(5*7)+(4*1)+(3*6)+(2*2)+(1*0)=140
140 % 10 = 0
So 75716-20-0 is a valid CAS Registry Number.

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75716-20-0Relevant articles and documents

Doubly Bridged S-Heterocyclic Ethylenes via Stereospecific Sigmatropic Rearrangement. Avenue to Short-Bridged Betweenanenes

Cere, Vanda,Paolucci, Claudio,Pollicino, Salvatore,Sandri, Edda,Fava, Antonino

, p. 486 - 490 (1981)

"Cis" and "trans" doubly bridged S-heterocyclic ethylenes result by stereospecific sigmatropic rearrangement of, respectively, cis and trans isomers of spirocyclic sulfonium ylides (eq 1 and 2).This approach has been applied to ylides derived from 7

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75716-20-0