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20963-49-9

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20963-49-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20963-49-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,6 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20963-49:
(7*2)+(6*0)+(5*9)+(4*6)+(3*3)+(2*4)+(1*9)=109
109 % 10 = 9
So 20963-49-9 is a valid CAS Registry Number.

20963-49-9Relevant articles and documents

Enantioselective synthesis of β-substituted chiral allylic amines: Via Rh-catalyzed asymmetric hydrogenation

Wang, Qingli,Gao, Wenchao,Lv, Hui,Zhang, Xumu

, p. 11850 - 11853 (2016/10/07)

An asymmetric mono-hydrogenation of 2-acetamido-1,3-dienes catalyzed by a Rh-DuanPhos complex has been developed. This approach provides easy access to chiral allylic amines with excellent enantioselectivities and high regioselectivities. The products are valuable chiral building blocks for pharmaceuticals.

2-Silyloxy-1,2-oxazines, a New Type of Acetals of Conjugated Nitroso Alkenes

Tishkov, Alexander A.,Lesiv, Alexey V.,Khomutova, Yulya A.,Strelenko, Yury A.,Nesterov, Ivan D.,Antipin, Michael Yu.,Ioffe, Sema L.,Denmark, Scott E.

, p. 9477 - 9480 (2007/10/03)

3-Alkyl-substituted 1,2-oxazine N-oxides 2 can be selectively transformed into 2-silyloxy-1,2-oxazines 1 upon treatment with silylating reagents. In the solid state derivatives 1 adopt a chair conformation with the pyramidal nitrogen atom, whereas in solu

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