Toluene-4-sulfonic acid (2R,5R,13bS)-2,11-dimethoxy-6-oxo-2,4a,5,6,8,9-hexahydro-1H-indolo[7a,1-a]isoquinolin-5-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 66835-04-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,3 and 5 respectively; the second part has 2 digits, 0 and 4 respectively. Calculate Digit Verification of CAS Registry Number 66835-04: (7*6)+(6*6)+(5*8)+(4*3)+(3*5)+(2*0)+(1*4)=149 149 % 10 = 9 So 66835-04-9 is a valid CAS Registry Number.
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