16821-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16821-61-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,8,2 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16821-61:
(7*1)+(6*6)+(5*8)+(4*2)+(3*1)+(2*6)+(1*1)=107
107 % 10 = 7
So 16821-61-7 is a valid CAS Registry Number.
16821-61-7Relevant articles and documents
SN1 reactions with inverse rate profiles
Denegri, Bernard,Minegishi, Shinya,Kronja, Olga,Mayr, Herbert
, p. 2302 - 2305 (2007/10/03)
Carbocations may accumulate during solvolysis reactions! The fact that fast ionization followed by slow trapping of the carbocation R+ is a characteristic pattern of many solvolysis reactions requires that the generally accepted energy profiles of these reactions be revised.
