117531-68-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117531-68-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,5,3 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 117531-68:
(8*1)+(7*1)+(6*7)+(5*5)+(4*3)+(3*1)+(2*6)+(1*8)=117
117 % 10 = 7
So 117531-68-7 is a valid CAS Registry Number.
117531-68-7Relevant articles and documents
2-Chloro-3H-indol-3-one and its Reactions with Nucleophiles
Katritzky, Alan R.,Fan, Wei-Qiang,Koziol, Anna E.,Palenik, Gus J.
, p. 821 - 828 (2007/10/02)
The title compound reacts with N- and S-nucleophiles to form 3-substituted indol-2-ones, but with C-nucleophiles to afford either these or the corresponding 2-substituted indol-3-ones.This dichotomy of behavior is documented and rationalized.