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1427691-27-7

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1427691-27-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1427691-27-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,7,6,9 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1427691-27:
(9*1)+(8*4)+(7*2)+(6*7)+(5*6)+(4*9)+(3*1)+(2*2)+(1*7)=177
177 % 10 = 7
So 1427691-27-7 is a valid CAS Registry Number.

1427691-27-7Downstream Products

1427691-27-7Relevant articles and documents

Synthesis of pyrazolo[1,5- c ]quinazoline derivatives through copper-catalyzed tandem reaction of 5-(2-bromoaryl)-1 H -pyrazoles with carbonyl compounds and aqueous ammonia

Guo, Shenghai,Wang, Jiliang,Fan, Xuesen,Zhang, Xinying,Guo, Dongqiang

, p. 3262 - 3270 (2013/06/26)

A practical and efficient synthesis of pyrazolo[1,5-c]quinazolines and 5,6-dihydropyrazolo[1,5-c]quinazolines, including several spiro compounds, through copper-catalyzed tandem reaction of 5-(2-bromoaryl)-1H-pyrazoles with carbonyl compounds and aqueous ammonia under air has been developed. Compared with literature methods toward pyrazolo[1,5-c]quinazoline derivatives, the synthetic method reported in this paper has the advantages of readily available and inexpensive starting materials and reagents, broad scope of substrates, and mild reaction conditions.

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