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273728-71-5

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273728-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 273728-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,3,7,2 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 273728-71:
(8*2)+(7*7)+(6*3)+(5*7)+(4*2)+(3*8)+(2*7)+(1*1)=165
165 % 10 = 5
So 273728-71-5 is a valid CAS Registry Number.

273728-71-5Relevant articles and documents

Asymmetric synthesis of (-)-4-epi-shikimic acid

Pornpakakul, Surachai,Pritchard, Robin G.,Stoodley, Richard J.

, p. 2691 - 2694 (2007/10/03)

The major cycloadduct, arising from the Diels-Alder reaction of maleic anhydride and (1E)-(2',3',4',6'-tetra-O-acetyl-β-D-glucopyranosyloxy)buta- 1,3-diene, is converted into methyl 3-O-(β-D-glucopyranosyl)-4-epi-shikimate and into (-)-4-epi-shikimic acid in overall yields of 20 and 17% (based on the diene). (C) 2000 Elsevier Science Ltd.

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