3a,6a-Diethyl-2,5-dihydroxy-3,6-dioxo-3,3a,3b,6,6a,6b-hexahydro-cyclobutadicyclopentene-1,4-dicarboxylic acid dimethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 91020-93-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,0,2 and 0 respectively; the second part has 2 digits, 9 and 3 respectively. Calculate Digit Verification of CAS Registry Number 91020-93: (7*9)+(6*1)+(5*0)+(4*2)+(3*0)+(2*9)+(1*3)=98 98 % 10 = 8 So 91020-93-8 is a valid CAS Registry Number.
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