(3E,6R,9E,11R,12R,14RS)-11,12-isopropylidenedioxy-6,14-dimethyl-1,7-dioxacyclotetradeca-3,9-diene-2,8-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 91273-95-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,2,7 and 3 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 91273-95: (7*9)+(6*1)+(5*2)+(4*7)+(3*3)+(2*9)+(1*5)=139 139 % 10 = 9 So 91273-95-9 is a valid CAS Registry Number.