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129245-22-3

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129245-22-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129245-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,2,4 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 129245-22:
(8*1)+(7*2)+(6*9)+(5*2)+(4*4)+(3*5)+(2*2)+(1*2)=123
123 % 10 = 3
So 129245-22-3 is a valid CAS Registry Number.

129245-22-3Relevant articles and documents

THE TOTAL SYNTHESIS OF BISUCABERIN

Bergeron, R. J.,McManis, J. S.

, p. 4939 - 4944 (1989)

The first total synthesis of 6,17-dihydroxy-1,6,12,17-tetraazacyclodocosane-2,5,13,16-tetrone (bisucaberin) is presented.The synthetic scheme employed in this study illustrates the utility of O-benzyl-N-(tert-butoxycarbonyl)-N-(4-cyanobutyl)hydroxylamine

Synthesis and biological evaluation of hydroxamate-based iron chelators

Bergeron,Wiegand,McManis,Perumal

, p. 3182 - 3187 (2007/10/02)

A new and versatile route to desferrioxamine B (DFO, 1) is described. Hydroxamate reagent 4 was elaborated in a series of high yield steps to the tert-butoxycarbonyl nitrile 11, which provided DFO in three transformations. The intermediate 11 could also be utilized in the preparation of DFO analogues which contain terminal N-acyl groups other than acetyl. The methodology was further employed in the syntheses of the DFO polyether analogues 2 and 3, beginning with the 3,6,9-trioxadecylation of N-(tert- butoxycarbonyl)-O-benzylhydroxylamine. Polyethers 2 and 3 are neutral molecules, which are somewhat more lipophilic than the parent DFO. Polyether hydroxamate 2 was shown to be nearly 3 times as effective as desferrioxamine at clearing iron in rats.

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