4-Methyl-1-((3aS,4R,5S,8S,8aR)-9-oxo-1,2,3,3a,4,5,8,8a-octahydro-4,8-methano-azulen-5-yl)-[1,2,4]triazolidine-3,5-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 128666-77-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,6 and 6 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 128666-77: (8*1)+(7*2)+(6*8)+(5*6)+(4*6)+(3*6)+(2*7)+(1*7)=163 163 % 10 = 3 So 128666-77-3 is a valid CAS Registry Number.