193557-34-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 193557-34-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,5,5 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 193557-34:
(8*1)+(7*9)+(6*3)+(5*5)+(4*5)+(3*7)+(2*3)+(1*4)=165
165 % 10 = 5
So 193557-34-5 is a valid CAS Registry Number.
193557-34-5Relevant articles and documents
Oligocyclopropane structural units from cationic intermediates
Taylor, Richard E.,Conrad Engelhardt,Yuan, Haiqing
, p. 1257 - 1260 (2008/02/09)
(matrix presented) syn-and anti-bis-cyclopropanes have been efficiently prepared through two distinct routes via the trapping of cyclopropylcarbinyl cationic intermediates. A ring-closing olefin metathesis for the formation of the necessary allylsilane pr