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503071-00-9

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503071-00-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 503071-00-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,0,7 and 1 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 503071-00:
(8*5)+(7*0)+(6*3)+(5*0)+(4*7)+(3*1)+(2*0)+(1*0)=89
89 % 10 = 9
So 503071-00-9 is a valid CAS Registry Number.

503071-00-9Relevant articles and documents

Enantioselective synthesis of protected D-serine from tetrahydrooxazin-4-one via a hetero Diels-Alder reaction

Panunzio, Mauro,Bandini, Elisa,Campana, Eileen,Vicennati, Paola

, p. 2113 - 2115 (2007/10/03)

Hetero Diels-Alder reaction between 2-aza-3-trimethylsilyloxy-1,3-diene and aldehydes gives rise to tetrahydrooxazin-4-ones, useful intermediates in the synthesis of α-amino-β-hydroxy acids. Herein we report the complete stereoselective synthesis of D-serine Cbz-methyl ester.

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