The CAS Registry Mumber 139682-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,8 and 2 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 139682-53: (8*1)+(7*3)+(6*9)+(5*6)+(4*8)+(3*2)+(2*5)+(1*3)=164 164 % 10 = 4 So 139682-53-4 is a valid CAS Registry Number.
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Get Best Price for139682-53-42-Butenedioic acid (E)-, polymer with 2,2-bis[(2-propenyloxy)methyl]-1-butanol, 1,2-ethanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 2,2'-oxybis[ethanol] and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione