5-Hydroxy-1,3,6-trimethyl-8-phenethyl-1H,8H-1,3,4b,8,9-pentaaza-fluorene-2,4,7-trione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 91285-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,2,8 and 5 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 91285-40: (7*9)+(6*1)+(5*2)+(4*8)+(3*5)+(2*4)+(1*0)=134 134 % 10 = 4 So 91285-40-4 is a valid CAS Registry Number.