(4R,9S,17S,22R)-(-)-27,29-dimethoxy-3,10,13,16,23-pentaoxatetracyclo<23.3.1.04,9.017,22>nonacosa-1(29)25,27-triene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 166271-31-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,2,7 and 1 respectively; the second part has 2 digits, 3 and 1 respectively. Calculate Digit Verification of CAS Registry Number 166271-31: (8*1)+(7*6)+(6*6)+(5*2)+(4*7)+(3*1)+(2*3)+(1*1)=134 134 % 10 = 4 So 166271-31-4 is a valid CAS Registry Number.