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1383446-40-9

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1383446-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1383446-40-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,3,4,4 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1383446-40:
(9*1)+(8*3)+(7*8)+(6*3)+(5*4)+(4*4)+(3*6)+(2*4)+(1*0)=169
169 % 10 = 9
So 1383446-40-9 is a valid CAS Registry Number.

1383446-40-9Upstream product

1383446-40-9Relevant academic research and scientific papers

Sulfoform generation from an orthogonally protected disaccharide

Liu, Runhui,Morales-Collazo, Oscar,Wei, Alexander

experimental part, p. 19 - 27 (2012/08/08)

An orthogonally protected disaccharide (GlcN(α1→4)Glc) with a β-linked 2′-aminoethyl linker was used to generate a series of sulfated derivatives (sulfoforms), with a 6-O-sulfate on the glucose residue and one or more sulfate esters on the terminal glucosamine. Deprotection and sulfonation steps were performed in solution and in variable order, with isolated yields of 36-54% (85-90% per operation) after HPLC purification. The modular deprotection-sulfonation sequences can be performed with efficient recovery of the polysulfate products, and avoids complications associated with heterogeneous reactivity in solid-phase synthesis.

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