74419-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74419-90-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,1 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74419-90:
(7*7)+(6*4)+(5*4)+(4*1)+(3*9)+(2*9)+(1*0)=142
142 % 10 = 2
So 74419-90-2 is a valid CAS Registry Number.
74419-90-2Relevant academic research and scientific papers
Ortho Lithiations of Arenesulfonic Acids. New Methodology for Electrophilic Aromatic Substitutions
Figuly, Garret D.,Martin, J. C.
, p. 3728 - 3729 (2007/10/02)
The directed ortho lithiation of aromatic sulfonic acids occurs in high yield.The ease of desulfonation makes this a useful method for the synthesis of substituted arenes lacking the sulfonic acid function.
