The CAS Registry Mumber 15017-25-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,0,1 and 7 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 15017-25: (7*1)+(6*5)+(5*0)+(4*1)+(3*7)+(2*2)+(1*5)=71 71 % 10 = 1 So 15017-25-1 is a valid CAS Registry Number.
Studies on thin-layer chromatography of the compounds carrying chelating ability. VII. Isonicotinoyl hydrazide related compounds and related hydrazones
Nishimoto,Toyoshima
, p. 27 - 32 (1967)
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