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631842-17-6

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631842-17-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 631842-17-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,1,8,4 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 631842-17:
(8*6)+(7*3)+(6*1)+(5*8)+(4*4)+(3*2)+(2*1)+(1*7)=146
146 % 10 = 6
So 631842-17-6 is a valid CAS Registry Number.

631842-17-6Relevant articles and documents

Synthesis of 2-amino-2-deoxy-β-glycosyl-(1→5)-nucleosides and the interaction with RNA

Zhang, Guisheng,Guan, Zhu,Zhang, Liangren,Min, Jimei,Zhang, Lihe

, p. 3273 - 3278 (2003)

1,3,4,6-Tetra-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranose and 1,3,4,6-tetra-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranose reacted with protected nucleosides in the presence of BF3 as promoter at room temperature to give selectively 2-amino-2-deoxy-β-glycosyl (1→5)nucleosides in good yields. CD spectra and thermal melting studies showed that 2-amino-2-deoxy-β-D-glucopyranosyl-(1→5)-nucleosides could interact with RNA in solution and 2-deoxy-2-amino-β-D-galactopyranosyl-(1→5)-nucleosides (17-19) exhibit higher affinity to RNA than 2-deoxy-2-amino-β-D-glucopyranosyl-(1→5)-nucleosides (14-16). It indicated that the majority of interactions are established between the polar group of glycosylnucleosides and the sugar-phosphate backbone of RNA helices and weak stacking interaction is observed. The different configuration of hydroxyl group on the glycosyl moiety may affect the glycosyl-nucleoside binding to RNA by induced fit.

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