81574-62-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81574-62-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,7 and 4 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81574-62:
(7*8)+(6*1)+(5*5)+(4*7)+(3*4)+(2*6)+(1*2)=141
141 % 10 = 1
So 81574-62-1 is a valid CAS Registry Number.
81574-62-1Relevant articles and documents
Synthesis of Grisa-2',5'-dien-3,4'-diones by Intramolecular ipso-Substitution
Sargent, Melvyn
, p. 285 (1980)
Appropriately substituted o-phenoxybenzoic esters on treatment with dry hydrogen chloride and titanium(IV) chloride in dichloromethane yield grisa-2',5'-dien-3,4'-diones by intramolecular ipso-substitution.