(-)-(2R,4aS,8aS)-2-bromo-3,4,4a,5,6,7,8,8a-octahydro-5,5,8a-trimethylnaphthalen-1(2H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 97855-67-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,5 and 5 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 97855-67: (7*9)+(6*7)+(5*8)+(4*5)+(3*5)+(2*6)+(1*7)=199 199 % 10 = 9 So 97855-67-9 is a valid CAS Registry Number.