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1031890-11-5

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1031890-11-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1031890-11-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,1,8,9 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1031890-11:
(9*1)+(8*0)+(7*3)+(6*1)+(5*8)+(4*9)+(3*0)+(2*1)+(1*1)=115
115 % 10 = 5
So 1031890-11-5 is a valid CAS Registry Number.

1031890-11-5Relevant articles and documents

Use of (S)-5-(2-methylpyrrolidin-2-yl)-1H-tetrazole as a novel and enantioselective organocatalyst for the aldol reaction

Tong, Sok-Teng,Harris, Paul W. R.,Barker, David,Brimble, Margaret A.

, p. 164 - 170 (2008)

The novel organocatalyst (S)-5-(2-methylpyrrolidin-2-yl)-1H-tetrazole (4) catalyzes the aldol reaction between acetone and various aldehydes with superior enantioselectivity to the existing organocatalysts (S)-proline (1) and (S)-5-(Pyrrolidin-2-yl)-1H-tetrazole (3). Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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