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1170853-48-1

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1170853-48-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1170853-48-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,0,8,5 and 3 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1170853-48:
(9*1)+(8*1)+(7*7)+(6*0)+(5*8)+(4*5)+(3*3)+(2*4)+(1*8)=151
151 % 10 = 1
So 1170853-48-1 is a valid CAS Registry Number.

1170853-48-1Downstream Products

1170853-48-1Relevant articles and documents

Diverse directions of heterocyclizations involving derivatives of 5-aminopyrazoles and N -arylmaleimides

Rudenko, Roman V.,Komykhov, Sergey A.,Desenko, Sergey M.,Musatov, Vladimir I.,Shishkin, Oleg V.,Konovalova, Irina S.,Vashchenko, Elena V.,Chebanov, Valentin A.

experimental part, p. 783 - 793 (2011/04/16)

Heterocyclization reactions between derivatives of 5-aminopyrazoles and N-arylmaleimides were studied and it was established that several directions are possible. Cyclizations involving 1,3-unsubstituted 5-aminopyrazoles yielded mixtures of two regioisomeric compounds, pyrazolo[1,5-a]pyrimidine-7- carboxamides and pyrazolo[3,4-b]pyridine-4-carboxamides. Reactions of 4-substituted 5-aminopyrazoles in boiling acetic acid or N,N-dimethylformamide in most cases gave pyrazolo[1,5-a]pyrimidine-7-carboxamides as the sole product. The treatment of 1-substituted 5-aminopyrazoles with maleimides possesses high selectivity only in N,N-dimethylformamide yielding pyrazolopyridines while in acetic acid the formation mixtures with pyrrolopyrazolones is observed. The key intermediates of the reaction studied were isolated and discussed. Georg Thieme Verlag Stuttgart New York.

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