52662-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52662-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,6,6 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 52662-20:
(7*5)+(6*2)+(5*6)+(4*6)+(3*2)+(2*2)+(1*0)=111
111 % 10 = 1
So 52662-20-1 is a valid CAS Registry Number.
52662-20-1Relevant articles and documents
The Synthesis of Tricyclic Naphtho Fused Frameworks via Isoquinolinium Salts
Franck, Richard W.,Gupta, Ram B.
, p. 293 - 296 (1985)
The cycloaddition of the enol ethers of cyclic ketones with isoquinolinium salts is the key step in a general preparation of interesting tricyclic naphthalene derivatives.