1β-tert-butoxy-7α,8α-epoxy-1,2,3,3aα,4,5,6,7,8,8a-decahydro-4α,8aβ-dimethyl-6α-azulenol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 81491-64-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,9 and 1 respectively; the second part has 2 digits, 6 and 4 respectively. Calculate Digit Verification of CAS Registry Number 81491-64: (7*8)+(6*1)+(5*4)+(4*9)+(3*1)+(2*6)+(1*4)=137 137 % 10 = 7 So 81491-64-7 is a valid CAS Registry Number.