1,1,7,7-tetraethyl-1,2,3,5,6,7-hexahydro-3,3,5,5-tetramethyl-s-indacene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 1142818-89-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,4,2,8,1 and 8 respectively; the second part has 2 digits, 8 and 9 respectively. Calculate Digit Verification of CAS Registry Number 1142818-89: (9*1)+(8*1)+(7*4)+(6*2)+(5*8)+(4*1)+(3*8)+(2*8)+(1*9)=150 150 % 10 = 0 So 1142818-89-0 is a valid CAS Registry Number.