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204511-59-1

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204511-59-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204511-59-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,5,1 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 204511-59:
(8*2)+(7*0)+(6*4)+(5*5)+(4*1)+(3*1)+(2*5)+(1*9)=91
91 % 10 = 1
So 204511-59-1 is a valid CAS Registry Number.

204511-59-1Downstream Products

204511-59-1Relevant articles and documents

Tricyclic heteroaromatic systems. Pyrazolo[3,4-c]quinolin-4-ones and pyrazolo[3,4-c]quinoline-1,4-diones: Synthesis and benzodiazepine receptor activity

Catarzi, Daniela,Colotta, Vittoria,Varano, Flavia,Cecchi, Lucia,Filacchioni, Guido,Galli, Alessandro,Costagli, Chiara

, p. 383 - 386 (1997)

Some pyrazolo[3,4-c]quinoline-4-ones 1-14 and pyrazolo[3,4-c]-quinoline-1,4-diones 15-17 were prepared and biologically evaluated for their binding at the benzodiazepine receptor (BZR) in rat cortical membranes. The moderate binding activity of 1-5, 7, 9-10, 13 is attributable to the lack of the optional proton acceptor at position-1, while the inactivity of the 1,4-dione derivatives 15-17 is due to the lack of the essential proton acceptor at position-3. These conclusions confirm the validity of our proposed pharmacophoric model.

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