2,4,6,8,10-pentaethyl-2,4,6,8,10-pentamethyl-cyclopentasiloxane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 17940-63-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,4 and 0 respectively; the second part has 2 digits, 6 and 3 respectively. Calculate Digit Verification of CAS Registry Number 17940-63: (7*1)+(6*7)+(5*9)+(4*4)+(3*0)+(2*6)+(1*3)=125 125 % 10 = 5 So 17940-63-5 is a valid CAS Registry Number.