The CAS Registry Mumber 190369-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,3,6 and 9 respectively; the second part has 2 digits, 9 and 8 respectively. Calculate Digit Verification of CAS Registry Number 190369-98: (8*1)+(7*9)+(6*0)+(5*3)+(4*6)+(3*9)+(2*9)+(1*8)=163 163 % 10 = 3 So 190369-98-3 is a valid CAS Registry Number.
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[(3S,4E)-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-4-methyl-5-(2-methyl-4-
thiazolyl)-4-pentenyl]triphenyl-, iodide