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26540-43-2

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26540-43-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26540-43-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,5,4 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 26540-43:
(7*2)+(6*6)+(5*5)+(4*4)+(3*0)+(2*4)+(1*3)=102
102 % 10 = 2
So 26540-43-2 is a valid CAS Registry Number.

26540-43-2Relevant articles and documents

Synthesis of Protected 3-Deoxy-3-fluoro- and 4-Deoxy-4-fluoro-d-galactopyranosides from Levoglucosan

Lainé, Danny,Denavit, Vincent,Giguère, Denis

, p. 4986 - 4992 (2017)

Fluorinated carbohydrates are invaluable tools to study various biochemical processes. Herein, we describe a new strategy to access orthogonally protected 3-deoxy-3-fluorogalactopyranose and acetylated 4-deoxy-4-fluorogalactopyranose. Starting from inexpensive levoglucosan, most reactions were performed on a gram scale and allowed excellent regio- and stereocontrol with a minimal use of protection/deprotection cycles. Hence, we developed practical alternatives to the decade-long reported method to access both 3-deoxy-3-fluoro- and 4-deoxy-4-fluorogalactopyranose.

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