The CAS Registry Mumber 98362-15-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,3,6 and 2 respectively; the second part has 2 digits, 1 and 5 respectively. Calculate Digit Verification of CAS Registry Number 98362-15: (7*9)+(6*8)+(5*3)+(4*6)+(3*2)+(2*1)+(1*5)=163 163 % 10 = 3 So 98362-15-3 is a valid CAS Registry Number.
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5-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-(2-methyl-1,3-dioxolan-2-yl)
ethyl]-6-ethoxy-7-methoxy-, acetate