138711-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138711-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,1 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138711-20:
(8*1)+(7*3)+(6*8)+(5*7)+(4*1)+(3*1)+(2*2)+(1*0)=123
123 % 10 = 3
So 138711-20-3 is a valid CAS Registry Number.
138711-20-3Relevant articles and documents
Synthesis of some bis(aroylmethyl)sulfoxides
Selvaraj, S,Dhanabalan, A,Renuga, S,Sivasubramanian, S,Arumugam, N
, p. 1060 - 1061 (2007/10/02)
A simple and general method for the synthesis of several new bis(aroylmethyl)sulfoxides (1-6) involving oxidation of the corresponding sulfides with hydrogen peroxide in acetic acid is presented.Though oxidation of sulfides to sulfoxides is common, conver
