(3aR,5S,5aR,8aS,8bR)-5-Furan-2-yl-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 99166-39-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,1,6 and 6 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 99166-39: (7*9)+(6*9)+(5*1)+(4*6)+(3*6)+(2*3)+(1*9)=179 179 % 10 = 9 So 99166-39-9 is a valid CAS Registry Number.