The CAS Registry Mumber 194933-57-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,9,3 and 3 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 194933-57: (8*1)+(7*9)+(6*4)+(5*9)+(4*3)+(3*3)+(2*5)+(1*7)=178 178 % 10 = 8 So 194933-57-8 is a valid CAS Registry Number.
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1,1-dihydroxy-4,8,12-tris[(phosphonooxy)methyl]-, 13-(dihydrogen
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