4,9-diphenyl-3,8-bis-(2,4,6-trimethyl-phenyl)-1,6-dioxa-2,4,7,9-tetraaza-spiro[4.4]nona-2,7-diene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 18389-84-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,3,8 and 9 respectively; the second part has 2 digits, 8 and 4 respectively. Calculate Digit Verification of CAS Registry Number 18389-84: (7*1)+(6*8)+(5*3)+(4*8)+(3*9)+(2*8)+(1*4)=149 149 % 10 = 9 So 18389-84-9 is a valid CAS Registry Number.