81603-32-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81603-32-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,0 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81603-32:
(7*8)+(6*1)+(5*6)+(4*0)+(3*3)+(2*3)+(1*2)=109
109 % 10 = 9
So 81603-32-9 is a valid CAS Registry Number.
81603-32-9Relevant articles and documents
Synthesis of Peri-Substituted Naphthalenes and Tetralins
Pourahmady, Naser,Vickery, Euin H.,Eisenbraun, Edmund J.
, p. 2590 - 2593 (2007/10/02)
Synthesis of 1-ethyl-8-methylnaphthalene and 1-isopropyl-8-methylnaphthalene along with several 1,2,3,4-tetrahydro derivatives is described.The difficulties encountered in the synthesis and purification of these peri-substituted hydrocarbons are discussed.
