The CAS Registry Mumber 33991-01-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,9 and 1 respectively; the second part has 2 digits, 0 and 1 respectively. Calculate Digit Verification of CAS Registry Number 33991-01: (7*3)+(6*3)+(5*9)+(4*9)+(3*1)+(2*0)+(1*1)=124 124 % 10 = 4 So 33991-01-4 is a valid CAS Registry Number.
33991-01-4 Well-known Company Product Price
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Aldrich
(538833) Poly(1-hexadecene-sulfone) average Mw ~10,000,000, powder