The CAS Registry Mumber 123455-87-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,5 and 5 respectively; the second part has 2 digits, 8 and 7 respectively. Calculate Digit Verification of CAS Registry Number 123455-87: (8*1)+(7*2)+(6*3)+(5*4)+(4*5)+(3*5)+(2*8)+(1*7)=118 118 % 10 = 8 So 123455-87-8 is a valid CAS Registry Number.
Get Best Price for123455-87-8Pyridine-2-sulfonic acid (3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-ylmethyl ester