117767-16-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117767-16-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,6 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 117767-16:
(8*1)+(7*1)+(6*7)+(5*7)+(4*6)+(3*7)+(2*1)+(1*6)=145
145 % 10 = 5
So 117767-16-5 is a valid CAS Registry Number.
117767-16-5Relevant articles and documents
Reactions of Hydroxybenzophenone with Hydrazines
Krishnan, Raghavan,Lang, S. A.,Lin, Yang-i,Wilkinson, Raymond G.
, p. 447 - 452 (2007/10/02)
The reaction of 2,2',4,4'-tetrahydroxybenzophenone with hydrazines under different conditions gave the corresponding indazol-1,3-benzenediol derivatives.It is an interesting and unique approach to the synthesis of indazoles.However, the reactions of 2-hyd
