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69275-14-5

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69275-14-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69275-14-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,2,7 and 5 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 69275-14:
(7*6)+(6*9)+(5*2)+(4*7)+(3*5)+(2*1)+(1*4)=155
155 % 10 = 5
So 69275-14-5 is a valid CAS Registry Number.

69275-14-5Relevant articles and documents

Purines, Pyrimidines, and Imidazoles. Part 52. New Syntheses of Some 1-β-D-Arabinofuranosylaminoimidazoles and of Related Purine Nucleosides, including 9-β-D-Arabinofuranosyladenine

Kadir, Kamaliah,Mackenzie, Grahame,Shaw, Gordon

, p. 2304 - 2309 (2007/10/02)

Ethyl 5-amino-1-β-D-arabinofuranosylimidazole-4-carboxylate and the corresponding carboxamide have been prepared by reaction of ethyl 5-aminoimidazole-4-carboxylate or the carboxamide, respectively with 2,3,5-tri-O-benzyl-α-D-arabinofuranosyl chloride (but not the bromide or iodide) and deblocking.Reaction of the nucleoside ester with formamidine acetate gave 9-β-D-arabinofuranosylhypoxanthine. 5-Amino-4-cyano-1-β-D-arabinofuranosylimidazole obtained by dehydration of the benzylated carboxamide or by direct glycosylation of 5-amino-4-cyanoimidazole and debenzylation of the product, when heated with triethyl orthoformate and ammonia, gave 9-β-D-arabinofuranosyladenine. 2,3,5-Tri-O-benzylarabinofuranosyl chloride with sodium azide, followed by reduction of the glycosyl azide formed with platinic oxide, and condensation of the arabinosylamine produced with ethyl N-(carbamoylcyanomethyl)formimidate gave a mixture of 2,3,5-tri-O-benzyl 1-α- and -β-D-arabinofuranosylimidazole 4-carboxamides.Reduction of the azide with lithium aluminium hydride followed by debenzylation of the product gave, in addition to tho two anomers, 5-amino-1-D-arabinitylimidazole-4-carboxamide.

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