138073-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138073-21-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,0,7 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138073-21:
(8*1)+(7*3)+(6*8)+(5*0)+(4*7)+(3*3)+(2*2)+(1*1)=119
119 % 10 = 9
So 138073-21-9 is a valid CAS Registry Number.
138073-21-9Relevant articles and documents
Synthesis of thioether derivatives of ethidium bromide
Whiteker,Lippard
, p. 5019 - 5020 (2007/10/02)
3,8-Dithiocyanato-5-ethyl-6-phenylphenanthridinium iodide was prepared via diazotization of ethidium bromide. Reduction with aqueous Na2S followed by alkalation gave cationic thioether derivatives.
