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20400-73-1

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20400-73-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20400-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,0 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20400-73:
(7*2)+(6*0)+(5*4)+(4*0)+(3*0)+(2*7)+(1*3)=51
51 % 10 = 1
So 20400-73-1 is a valid CAS Registry Number.

20400-73-1Relevant articles and documents

Direct synthesis of imides from dicarboxylic acids using microwaves

Seijas, Julio A.,Vazquez-Tato, M. Pilar,Martinez, M. Montserrat,Nunez-Corredoira, Gonzalo

, p. 420 - 421 (1999)

1,4- and 1,5-dicarboxylic acids, when treated with amines in a domestic microwave oven, afford good yields of the corresponding imides.

On the reaction of (S)-trifluoroacetoxysuccinic anhydride with amines to produce hydroxysuccinamic (malamic) acid derivatives

Lorenz, Peter,Stermitz, Frank R.,Beck, John J.

experimental part, p. 733 - 737 (2011/10/12)

L-Malic acid (2) reacts with trifluoroacetic anhydride under anhydrous conditions to give (S)-trifluoroacetoxysuccinic acid anhydride (3). The anhydride 3 undergoes regioselective ring opening with an excess of anilines or primary aliphatic amines leading

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