Pentasilane, 1,1,2,2,3,3,4,4,5,5-decaphenyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 18849-09-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,4 and 9 respectively; the second part has 2 digits, 0 and 9 respectively. Calculate Digit Verification of CAS Registry Number 18849-09: (7*1)+(6*8)+(5*8)+(4*4)+(3*9)+(2*0)+(1*9)=147 147 % 10 = 7 So 18849-09-7 is a valid CAS Registry Number.