140172-87-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140172-87-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,1,7 and 2 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 140172-87:
(8*1)+(7*4)+(6*0)+(5*1)+(4*7)+(3*2)+(2*8)+(1*7)=98
98 % 10 = 8
So 140172-87-8 is a valid CAS Registry Number.
140172-87-8Relevant articles and documents
4-ETHOXYACENAPHTHOXEPINIUM IONS AND ACENAPHTHOXEPIN-4-ONES
Mezheritskii, V. V.,Pikus, A. L.,Tregub, N. G.
, p. 1945 - 1950 (2007/10/02)
Sandmeyer reactions of acenaphthene peri-aminoketones give the corresponding peri-hydroxyketones, which rearrange under Becker-Venkataraman conditions to form peri-hydroxy-β-diketones. 2-Aryl-4-ethoxyacenaphth-oxepinium ion salts, in turn, have be
