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225640-48-2

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225640-48-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 225640-48-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,5,6,4 and 0 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 225640-48:
(8*2)+(7*2)+(6*5)+(5*6)+(4*4)+(3*0)+(2*4)+(1*8)=122
122 % 10 = 2
So 225640-48-2 is a valid CAS Registry Number.

225640-48-2Downstream Products

225640-48-2Relevant articles and documents

Synthesis of the two monomethyl esters of the disaccharide 4-O-α-D-galacturonosyl-D-galacturonic acid and of precursors for the preparation of higher oligomers methyl uronated in definite sequences

Magaud, Didier,Grandjean, Cyrille,Doutheau, Alain,Anker, Daniel,Shevchik, Vladimir,Cotte-Pattat, Nicole,Robert-Baudouy, Janine

, p. 189 - 199 (2007/10/03)

Methyl (α-D-galactopyranosyluronic acid)-(1→4)-D-galactopyranuronate and methyl α-D-galactopyranosyluronate-(1→4)-D-galactopyranuronic acid have been synthesized by coupling methyl (benzyl 2,3-di-O-benzyl-β-D-galactopyranosid)uronate (3) or benzyl (benzyl 2,3-di-O-benzyl-β-D-galactopyranosid)uronate (4) with benzyl (phenyl 2,3,4-tri-O-benzyl-1-thio-β-D-galactopyranosid)uronate and methyl (phenyl 2,3,4-tri-O-benzyl-1-thio-β-D-galactopyranosid)uronate, respectively, using N-iodosuccinimide and trifluoromethanesulphonic acid as promoters, followed by removal of the benzyl groups. The 4'-OH unprotected dimers benzyl (methyl 2,3-di-O-benzyl-α-D-galactopyranosyluronate)-(1→4)-(benzyl 2,3-di-O-benzyl-β-D-galactopyranosid)uronate and methyl (benzyl 2,3-di-O-benzyl-α-D-galactopyranosyluronate)-(1→4)-(benzyl 2,3-di-O-benzyl-β-D-galactopyranosid)uronate were prepared from methyl (phenyl 2,3-di-O-benzyl-1-thio-4-O-trimethylsilyl-β-D-galactopyranosid)uronate and benzyl (phenyl 2,3-di-O-benzyl-1-thio-4-O-trimethylsilyl-β-D-galactopyranosid)uronate and acceptors 4 or 3, respectively. These compounds have been designed to serve as precursors for the preparation of higher-membered d-galacturonic acid oligomers methyl esterified in definite positions. Copyright (C) 1998 Elsevier Science Ltd.

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