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302346-91-4

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302346-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 302346-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,2,3,4 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 302346-91:
(8*3)+(7*0)+(6*2)+(5*3)+(4*4)+(3*6)+(2*9)+(1*1)=104
104 % 10 = 4
So 302346-91-4 is a valid CAS Registry Number.

302346-91-4Downstream Products

302346-91-4Relevant articles and documents

Synthesis and Characterization of an Anomeric Sulfur Analogue of CMP-Sialic Acid

Cohen, Scott B.,Halcomb, Randall L.

, p. 6145 - 6152 (2007/10/03)

α-2,3-Sialyltransferase catalyzes the transfer of sialic acid from CMP-sialic acid (1) to a lactose acceptor. An analogue of 1 was synthesized in which the anomeric oxygen atom was replaced with a sulfur atom (1S). The key step in the synthesis of IS was a tetrazole-promoted coupling of a cytidine-5′-phosphoramidite with a glycosyl thiol of a protected sialic acid. Compounds 1 and 1S were characterized for their activity in a sialyl transfer assay. The rate of solvolysis in aqueous buffer of analogue 1S was 50-fold slower than that of 1. Analogue 1S was found to be substrate for α-2,3-sialyltransferase. The Km of 1S was just 3-fold higher than that of 1, while the kcat of 1S was 2 orders of magnitude lower compared to 1.

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