Cas 173258-39-4,ethyl 4-oxo-1-phenylsulfonylpiperidine-2-carboxylate

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Check Digit Verification of cas no

The CAS Registry Mumber 173258-39-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,2,5 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 173258-39:
(8*1)+(7*7)+(6*3)+(5*2)+(4*5)+(3*8)+(2*3)+(1*9)=144
144 % 10 = 4
So 173258-39-4 is a valid CAS Registry Number.

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173258-39-4Relevant academic research and scientific papers

Diastereoselectivity and assignment of absolute stereochemistry in the aza-Diels-Alder reaction of a sulfonylimino acetate with 1-methoxy-3-trimethylsilyloxybuta-1,3-diene

McFarlane, Andrew K.,Thomas Gareth,Whiting, Andrew

, p. 2803 - 2810 (2007/10/02)

N-imine 1b generated in situ from the corresponding brominated glycinate 4b reacts with Davishefsky's diene under thermal conditions to give a high yield of diastereoisomeric Diels-Alder adducts 7b and 6b in a 2.04:1 ratio.

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