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721924-59-0

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721924-59-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 721924-59-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,9,2 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 721924-59:
(8*7)+(7*2)+(6*1)+(5*9)+(4*2)+(3*4)+(2*5)+(1*9)=160
160 % 10 = 0
So 721924-59-0 is a valid CAS Registry Number.

721924-59-0Downstream Products

721924-59-0Relevant articles and documents

Synthesis and transformations of [1,2-O-isopropylidene-α-D-erythro (and α-D-ribo)furanose]-3-spiro-3′-(4′-amino-5′H- 2′,3′-dihydroisothiazole-1′,1′-dioxide) derivatives

Van Nhien, Albert Nguyen,Domínguez, Laura,Tomassi, Cyrille,Rosario Torres,Len, Christophe,Postel, Denis,Marco-Contelles, José

, p. 4709 - 4727 (2007/10/03)

The carbanion-mediated sulfonamide cyclisations (CSIC protocols) of glyco-α-sulfonamidonitriles derived from readily available uloses 1A and 1B have been investigated using different bases (potassium carbonate, cesium carbonate, LDA and n-BuLi). As a result, a series of enantiomerically pure [1,2-O-isopropylidene-α-D-erythro (and α-D-ribo)furanose]-3-spiro- 3′-(4′-amino-5′H-2′,3′-dihydroisothiazole- 1′,1′-dioxide) derivatives have been prepared and isolated in good yields.

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