1,7-dioxo-3,3,6,9,9-pentamethyl-1,2,3,4,7,8,9,10-octahydro-10aH-dibenzopyran is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 344867-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,8,6 and 7 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 344867-40: (8*3)+(7*4)+(6*4)+(5*8)+(4*6)+(3*7)+(2*4)+(1*0)=169 169 % 10 = 9 So 344867-40-9 is a valid CAS Registry Number.