The CAS Registry Mumber 191659-67-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,6,5 and 9 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 191659-67: (8*1)+(7*9)+(6*1)+(5*6)+(4*5)+(3*9)+(2*6)+(1*7)=173 173 % 10 = 3 So 191659-67-3 is a valid CAS Registry Number.
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Get Best Price for191659-67-3Spiro3,7-dioxabicyclo4.1.0heptane-4,2-2Hpyran-5-ol, tetrahydro-, (1.alpha.,4.alpha.,5.beta.,6.alpha.)-