1,11-bis-methacryloyloxy-2,2,4,4,6,6,8,8,10,10-decamethyl-3,5,7,9-tetraoxa-2,4,6,8,10-pentasila-undecane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 18642-78-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,4 and 2 respectively; the second part has 2 digits, 7 and 8 respectively. Calculate Digit Verification of CAS Registry Number 18642-78: (7*1)+(6*8)+(5*6)+(4*4)+(3*2)+(2*7)+(1*8)=129 129 % 10 = 9 So 18642-78-9 is a valid CAS Registry Number.