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1620194-51-5

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1620194-51-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1620194-51-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,1,9 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1620194-51:
(9*1)+(8*6)+(7*2)+(6*0)+(5*1)+(4*9)+(3*4)+(2*5)+(1*1)=135
135 % 10 = 5
So 1620194-51-5 is a valid CAS Registry Number.

1620194-51-5Downstream Products

1620194-51-5Relevant articles and documents

Palladium catalyzed synthesis and physical properties of indolo[2,3-b]quinoxalines

Hung, Tran Quang,Hoang, Do Huy,Thang, Ngo Ngoc,Dang, Tuan Thanh,Ayub, Khurshid,Villinger, Alexander,Friedrich, Aleksej,Lochbrunner, Stefan,Flechsig, Gerd-Uwe,Langer, Peter

, p. 6151 - 6166 (2014/08/05)

A series of indolo[2,3-b]quinoxaline derivatives were efficiently synthesized from 2,3-dibromoquinoxaline by two pathways. A one-pot approach using Pd-catalyzed two-fold C-N coupling and C-H activation reactions gave indolo[2,3-b]quinoxaline derivatives in good yields, but with limited substrate scope. In addition, a two-step approach to indolo[2,3-b]quinoxalines was developed which is based on Pd-catalyzed Suzuki coupling reactions and subsequent annulation by Pd-catalyzed two-fold C-N coupling with aromatic and aliphatic amines. The electrochemical and photochemical properties of indolo[2,3-b]quinoxaline derivatives were investigated. These studies show that 6-(4-methoxyphenyl)-6H-indolo[2,3-b]quinoxaline showed the highest HOMO energy level and lowest band gap. This journal is the Partner Organisations 2014.

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