(4aR,8aS)-(+)-4a,5,6,7,8,8a-hexahydro-1,1,3,6,6-pentamethyl-1H-2-benzopyran is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 191656-39-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,6,5 and 6 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 191656-39: (8*1)+(7*9)+(6*1)+(5*6)+(4*5)+(3*6)+(2*3)+(1*9)=160 160 % 10 = 0 So 191656-39-0 is a valid CAS Registry Number.