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17120-54-6

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17120-54-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17120-54-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,1,2 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17120-54:
(7*1)+(6*7)+(5*1)+(4*2)+(3*0)+(2*5)+(1*4)=76
76 % 10 = 6
So 17120-54-6 is a valid CAS Registry Number.

17120-54-6Relevant 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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