142696-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142696-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,6,9 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142696-73:
(8*1)+(7*4)+(6*2)+(5*6)+(4*9)+(3*6)+(2*7)+(1*3)=149
149 % 10 = 9
So 142696-73-9 is a valid CAS Registry Number.
142696-73-9Relevant articles and documents
Synthesis of Chiral Zileuton, A Potent And Selective Inhibitor Of 5-Lipoxygenase
Hsiao, Chi-Nung,Kolasa, Teodozyj
, p. 2629 - 2632 (1992)
Coupling and intramolecular Wittig reaction of N-benzyloxy-D-alanine anhydride (13) and (2-Mercaptophenyl)methyltriphenylphosphonium bromide (3) were used as key steps to prepare (+)-enantiomer of zileuton (1), a potent and selective inhibitor of 5-lipoxygenase.
