Benzoic acid (4bS,8aS)-2-isopropyl-3-methoxy-4b,8,8-trimethyl-9-oxo-4b,5,6,7,8,8a,9,10-octahydro-phenanthren-4-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 72505-91-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,5,0 and 5 respectively; the second part has 2 digits, 9 and 1 respectively. Calculate Digit Verification of CAS Registry Number 72505-91: (7*7)+(6*2)+(5*5)+(4*0)+(3*5)+(2*9)+(1*1)=120 120 % 10 = 0 So 72505-91-0 is a valid CAS Registry Number.