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1257983-14-4

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1257983-14-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257983-14-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,9,8 and 3 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1257983-14:
(9*1)+(8*2)+(7*5)+(6*7)+(5*9)+(4*8)+(3*3)+(2*1)+(1*4)=194
194 % 10 = 4
So 1257983-14-4 is a valid CAS Registry Number.

1257983-14-4Relevant articles and documents

Synthesis of (2-Aminophenyl)(naphthalen-2-yl)methanones via Intramolecular Rearrangement of (E)-3-Styrylquinolin-4(1 H)-ones under Irradiation with 365 nm UV Light

Jing, Sisi,He, Yun,Wang, Tao,Zhang, Jin,Cheng, Anqi,Liang, Yong,Zhang, Zunting

, p. 1578 - 1582 (2018)

A highly efficient and environmentally friendly synthesis of (2-aminophenyl)(naphthalen-2-yl)methanones was developed. The (2-aminophenyl)(naphthalen-2-yl)methanone derivatives were obtained in high yields (up to 96%) by the irradiation of (E)-3-styrylquinolin-4(1 H)-ones in EtOH-H 2 O (7:1) with UV light (365 nm) at room temperature under Ar atmosphere. The demonstrated photoinduced intramolecular rearrangement has advantages over other transition-metal-catalyzed reactions, e.g. no requirement of additives, green solvent, broad substrate scope, and high atom efficiency.

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