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53269-82-2

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53269-82-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53269-82-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,2,6 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 53269-82:
(7*5)+(6*3)+(5*2)+(4*6)+(3*9)+(2*8)+(1*2)=132
132 % 10 = 2
So 53269-82-2 is a valid CAS Registry Number.

53269-82-2Downstream Products

53269-82-2Relevant articles and documents

PARTIALLY ACETYLATED SUCROSE. STRUCTURES OF HEPTA-O-ACETYLSUCROSES FORMED BY DEACETYLATION OF OCTA-O-ACETYLSUCROSE

Capek, Karel,Vodrazkova-Medonosova, Monika,Moravcova, Jitka,Sedmera, Petr

, p. 1476 - 1486 (2007/10/02)

Formation of hepta-O-acetylsucroses I, II, XI, and XII, having a free hydroxyl group on the fructose moiety, in deacetylation of octa-O-acetylsucrose on aluminum oxide impregnated by potassium carbonate was proved by preparative chromatography on silicad gel and by liquid chromatography.Their structures were inferred from the 1H and 13C NMR spectra, from NMR and mass spectra of their mono-methanesulfonyl derivatives VI-IX, or using comparison with authentic samples.Methanolic solutions of hepta-O-acetylsucroses I and II, a mixture of hepta-O-acetylsucroses XI and XII, and octa-O-acetylsucrose were deacetylated on aluminum oxide impregnated by potassium carbonate and the time dependence of the reaction mixture composition was studied by liquid chromatography.Kinetic measurements show that deacetylation is first order reaction with respect to the starting compounds.With octa-O-acetylsucrose, the most reactive group is that at position 4', so that formation of 1',2,3,3',4,6,6'-hepta-O-acetylsucrose (II) is preferred.Both this compound and 1',2,3,4,4',6,6'-hepta-O-acetylsucrose (XII) are deacetylated to 1',2,3,4,6,6'-hexa-O-acetylsucrose (V).From 2,3,3',4,4',6,6'-hepta-O-acetylsucrose (XI), the 2,3,4,4',6,6'-hexa-O-acetylsucrose (IV) results.Other hexa-O-acetylsucroses,formed by deacetylation of hepta-O-acetylsucroses I and II, are deacetylated to penta-O-acetylsucroses faster than the hexa-O-acetylsucrose V and their proportion in the mixture after deacetylation is very low.No migration of the O-acetyl group from the position 4' to the position 6' or vice versa occurs during the deacetylation.

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