161892-59-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161892-59-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,8,9 and 2 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161892-59:
(8*1)+(7*6)+(6*1)+(5*8)+(4*9)+(3*2)+(2*5)+(1*9)=157
157 % 10 = 7
So 161892-59-7 is a valid CAS Registry Number.
161892-59-7Relevant articles and documents
Synthesis of carbazole derivatives, II: C-2-substituted indoles as intermediates of pyrrolino[3,4-c]carbazoles
Mahboobi,Kuhr
, p. 45 - 52 (1995)
Starting from the indole derivatives 4, 7 and 15 Grignard reaction, nucleophilic substitution at the pertinent dithian, and Wittig reaction afford preparatively useful side chains. By intramolecular Michael reaction the pertinent compounds lead to the pyr
