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220854-79-5

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220854-79-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220854-79-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,8,5 and 4 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 220854-79:
(8*2)+(7*2)+(6*0)+(5*8)+(4*5)+(3*4)+(2*7)+(1*9)=125
125 % 10 = 5
So 220854-79-5 is a valid CAS Registry Number.

220854-79-5Relevant articles and documents

Enantioselective synthesis of (2-pyridyl)alanines via catalytic hydrogenation and application to the synthesis of L-azatyrosine.

Adamczyk,Akireddy,Reddy

, p. 3157 - 3159 (2001)

[reaction: see text] A novel method for the synthesis of (2-pyridyl)alanines 2a-b was developed by converting (2-pyridyl)dehydroamino acid derivatives 1a-b to the corresponding N-oxides 3a-b followed by asymmetric hydrogenation using (R,R)-[Rh(Et-DUPHOS)(

Preparation of (S)-2-quinolylalanine by asymmetric hydrogenation

Jones,Palmer,Paul,Tiffin

, p. 1211 - 1214 (2007/10/03)

The synthesis of (S)-2-quinolylalanine through asymmetric hydrogenation with (S,S)-Et-DuPHOS-Rh is described. The reaction has been extended to other 2-pyridylalanine derivatives.

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