109959-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109959-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,5 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109959-50:
(8*1)+(7*0)+(6*9)+(5*9)+(4*5)+(3*9)+(2*5)+(1*0)=164
164 % 10 = 4
So 109959-50-4 is a valid CAS Registry Number.
109959-50-4Relevant articles and documents
Metalation Reactions of 1-Silacyclo-3-pentenes
Horvath, R. F.,Chan, T. H.
, p. 4489 - 4494 (2007/10/02)
The metalation of a series of 1-silacyclo-3-pentenes was studied.The reaction depends critically on the substituent at the silicon. 1,1-Bis(4-tert-butylphenyl)-1-silacyclo-3-pentene was metalated cleanly to give the anion derived from proton abstraction o
