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1374641-91-4

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1374641-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1374641-91-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,4,6,4 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1374641-91:
(9*1)+(8*3)+(7*7)+(6*4)+(5*6)+(4*4)+(3*1)+(2*9)+(1*1)=174
174 % 10 = 4
So 1374641-91-4 is a valid CAS Registry Number.

1374641-91-4Relevant articles and documents

Synthesis of various fused pyrimidine rings and their pharmacological and antimicrobial evaluation

Salem, Mounir A.,Marzouk, Magda I.,Mahmoud, Naglaa F.

, p. 1059 - 1073 (2014)

Various fused pyrimidines, such as furo[2,3-d]pyrimidine, triazolo- [1,5-a]pyrimidine and tetrazolo[1,5-a]pyrimidine, were synthesized in the reactions of thioxopyrimidine-6(1H)-ones with ethyl chloroacetate (under different reaction conditions), thiourea and sodium nitrite. Pyrimidine thiones reacted with POCl3/PCl5 to give the chloro derivatives which reacted with sodium azide and thiourea to give tetrazolo[1,5-c]pyrimidines, and pyrimido pyrimidines. Thioxopyrimidine-6(1H)-ones reacted with benzylamine to give pyrrolo[2,3-d]pyrimidinethiones. Theoretical calculation using MIDO/3, Fukui indices and the heat of formation of some compounds were carried out. The pharmacological and antimicrobial activities of some of the synthesized products were also evaluated.

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