Formic acid (1S,2S,3aR,5aR,8aS)-1,4,7,7-tetramethyl-1,2,3,3a,5a,6,7,8-octahydro-cyclopenta[c]pentalen-2-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 89111-53-5 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, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 89111-53: (7*8)+(6*9)+(5*1)+(4*1)+(3*1)+(2*5)+(1*3)=135 135 % 10 = 5 So 89111-53-5 is a valid CAS Registry Number.