1,1,6,6-tetrabenzyl-3,8-dimethoxy-1,6-dihydro-chromeno[5,4,3-cde]chromene-2,5,7,10-tetraone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 121971-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,7 and 1 respectively; the second part has 2 digits, 6 and 3 respectively. Calculate Digit Verification of CAS Registry Number 121971-63: (8*1)+(7*2)+(6*1)+(5*9)+(4*7)+(3*1)+(2*6)+(1*3)=119 119 % 10 = 9 So 121971-63-9 is a valid CAS Registry Number.
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