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121819-45-2

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121819-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121819-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,1 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 121819-45:
(8*1)+(7*2)+(6*1)+(5*8)+(4*1)+(3*9)+(2*4)+(1*5)=112
112 % 10 = 2
So 121819-45-2 is a valid CAS Registry Number.

121819-45-2Relevant academic research and scientific papers

The regioselective synthesis of 2H-pyrido[2,3-b]pyrrolo[2,3-e]pyrazin-2-one

Jamrozy, Krzysztof,Szymoniak, Katarzyna,Ostrowska, Katarzyna

experimental part, p. 2275 - 2282 (2011/04/16)

The regioselective reaction of 1-aryl-4-(phenylhydroxymethylidene)- pyrrolidine-2,3,5-triones 1 with 2,3-diaminopyridine in boiling glacial AcOH in the presence of TsOH led to the formation of new 2H-pyrido[2,3-b]pyrrolo[2,3-e] pyrazin-2-ones. The structu

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