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(2R,3S)-toluene-4-sulfonic acid 4-benzyloxycarbonylamino-3-hydroxy-5-oxotetrahydrofuran-2-ylmethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

654083-23-5

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654083-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 654083-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,4,0,8 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 654083-23:
(8*6)+(7*5)+(6*4)+(5*0)+(4*8)+(3*3)+(2*2)+(1*3)=155
155 % 10 = 5
So 654083-23-5 is a valid CAS Registry Number.

654083-23-5Upstream product

654083-23-5Relevant articles and documents

Total synthesis of 3,4-dihydroxyprolines, D-threo-L-norvaline and (2S,3R,4R)-2-amino-3,4-dihydroxytetrahydrofuran-2-carboxylic acid methyl ester

Soengas, Raquel G.,Estevez, Juan C.,Estevez, Ramon J.

, p. 3955 - 3963 (2003)

The Henry reaction between D-glyceraldehyde and ethyl nitroacetate allowed the practical development of a diastereoselective synthesis of 3,4,5-trihydroxy-2-nitropentanoic acid esters, which were reduced to polyoxamic acids, which were used in a new diastereoselective synthesis of 3,4-dihydroxyprolines and new enantioselective syntheses of D-threo-L-norvaline and (2S,3R,4R)-2-amino-3,4-dihydroxytetrahydrofuran-2-carboxylic acid methyl ester.

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