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54618-11-0

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54618-11-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54618-11-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,1 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54618-11:
(7*5)+(6*4)+(5*6)+(4*1)+(3*8)+(2*1)+(1*1)=120
120 % 10 = 0
So 54618-11-0 is a valid CAS Registry Number.

54618-11-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 3',5'-di-O-benzoyluridine

1.2 Other means of identification

Product number -
Other names O3',O5'-dibenzoyl-uridine

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:54618-11-0 SDS

54618-11-0Relevant articles and documents

Kilogram-Scale Synthesis of 2′- C-Methyl- arabino-Uridine from Uridine via Dynamic Selective Dipivaloylation

Calabria, Ralph,Campeau, Louis-Charles,Chung, John Y. L.,Dalby, Stephen M.,Davis, Tyler A.,He, Cyndi Q.,Kassim, Amude M.,Limanto, John,Simmons, Bryon,Song, Zhiguo J.,Wright, Timothy J.

, (2021/08/18)

We report a practical 3′,5′-diprotection strategy suitable for the kilogram-scale preparation of 2′-C-methyl-arabino-uridine, a key intermediate in the synthesis of the HCV NS5B inhibitor uprifosbuvir. Starting from uridine, dipivaloylation afforded an ~2:1 mixture of 3′,5′- and 2′,5′-dipivaloyluridine. Subjecting this mixture to TEMPO/bleach oxidation promoted a dynamic acylation migration-selective oxidation to afford the 2′-ketone in 65% yield. Alternatively, treatment with 1 equiv of BF3 etherate led to the crystallization-driven equilibration and precipitation of 3′,5′-dipivaloyluridine·BF3 complex in a >50:1 ratio. After salt break, this mixture was oxidized in the presence of TEMPO/AcOOH to afford the 2′-ketone in 90% yield. Subsequent α-facial-selective methylation with MeMgBr/MnCl2 afforded 3′,5′-dipivaloylated 2′-C-methyl-arabino-uridine 12. This three-step process was successfully demonstrated on a multikilogram scale to afford the key intermediate for the manufacture of uprifosbuvir.

A (2 'R) -2' - deoxy -2 '- fluoro -2' - methyl urea glucoside preparation method (by machine translation)

-

, (2017/02/28)

The invention discloses a (2 'R) -2' - deoxy -2 '- fluoro -2' - methyl urea glucoside (type I) synthetic method. Cheap and easily available starting material, through the hydroxyl protection, cyclization, the links such as fluoride, obtains the type I compound. (by machine translation)

Regioselective Mitsunobu Reaction of Partially Protected Uridine

Szlenkier, Maurycy,Kamel, Karol,Boryski, Jerzy

, p. 410 - 425 (2016/08/05)

Mitsunobu reaction of partially acylated uridine proceeds with high regioselectivity for intramolecular SN2 anhydro linkage closuring. Under the reaction conditions, an isomeric mixture of diacyl uridine derivatives with either free 2′- or 3′-hydroxyl group was transformed into a single cyclonucleosidic product, 2,2′-anhydro-3′,5′-di-O-acyluridine. This paper presents a possible mechanism of the reactions, the explanation of observed phenomenon based on semiempirical and density functional theory (DFT) calculations and possible utility of this synthetic pathway.

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