(4aR,6aS,9aR)-4-Hydroxy-8,8-dimethyl-1-methylene-2-oxo-1,2,4,4a,6a,7,8,9-octahydro-pentaleno[1,6a-c]pyran-5-carboxylic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 89111-61-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,1,1 and 1 respectively; the second part has 2 digits, 6 and 1 respectively. Calculate Digit Verification of CAS Registry Number 89111-61: (7*8)+(6*9)+(5*1)+(4*1)+(3*1)+(2*6)+(1*1)=135 135 % 10 = 5 So 89111-61-5 is a valid CAS Registry Number.
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