113142-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 113142-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,1,4 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 113142-41:
(8*1)+(7*1)+(6*3)+(5*1)+(4*4)+(3*2)+(2*4)+(1*1)=69
69 % 10 = 9
So 113142-41-9 is a valid CAS Registry Number.
113142-41-9Relevant articles and documents
The Protection of Heterocyclic N-H Groups
Katritzky, Alan R.,Khan, Ghulam R.,Marson, Charles M.
, p. 641 - 644 (2007/10/02)
Pyrrole, indole, carbazole and imidazole have been protected as N- derivatives.Deprotection occured under mild conditions after quaternisation. 3-Bromoindole was prepared by bromination of the protected parent indole.