(6E,13E,17Z)-2,6,12,12,17-pentamethyl-19-tetrahydropyran-2-yloxy-nonadeca-2,6,13,17-tetraen-9-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 53840-41-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,8,4 and 0 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 53840-41: (7*5)+(6*3)+(5*8)+(4*4)+(3*0)+(2*4)+(1*1)=118 118 % 10 = 8 So 53840-41-8 is a valid CAS Registry Number.