5,11,17,23,29,35,41,47-octa-tert-butyl-2-chloro-49,50,51,52,53,54,55,56-octamethoxycalix[8]arene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 1358613-40-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,8,6,1 and 3 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 1358613-40: (9*1)+(8*3)+(7*5)+(6*8)+(5*6)+(4*1)+(3*3)+(2*4)+(1*0)=167 167 % 10 = 7 So 1358613-40-7 is a valid CAS Registry Number.