117157-59-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117157-59-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,1,5 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117157-59:
(8*1)+(7*1)+(6*7)+(5*1)+(4*5)+(3*7)+(2*5)+(1*9)=122
122 % 10 = 2
So 117157-59-2 is a valid CAS Registry Number.
117157-59-2Relevant academic research and scientific papers
Synthesis and Studies of Some New Phthal-as-Eins
Chamoli, R. P.,Rai, S. J.,Gupta, P. C.
, p. 863 - 866 (2007/10/02)
Condensation of two γ-keto acids, o-(p-methylbenzoyl)benzoic acid and o-(p-methylbenzoyl)tetrachlorobenzoic acid with phenols gives new series of phthalein dyes.These dyes are substituted phthalides in which central carbon atom is attached to two differen
