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[(2S,3R,4R,5R)-2-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-methoxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl]-acetic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

221536-90-9

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221536-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221536-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,3 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 221536-90:
(8*2)+(7*2)+(6*1)+(5*5)+(4*3)+(3*6)+(2*9)+(1*0)=109
109 % 10 = 9
So 221536-90-9 is a valid CAS Registry Number.

221536-90-9Relevant academic research and scientific papers

An expeditious synthesis of 3'-α-carboxymethyl-2'-O-methyl ribonucleosides

Von Matt, Peter,Lochmann, Thomas,Kesselring, Rudolf,Altmann, Karl-Heinz

, p. 1873 - 1876 (2007/10/03)

3'-α-Carboxymethyl-2'-O-methyl ribonucleosides, which are important building blocks for the construction of high affinity amide modified antisense oligonucleotides, have been synthesized from the corresponding 2'- O-methyl ribonucleosides via catalytic hydrogenation of their 3'-deoxy 3'- methoxycarbonyl-methylidene derivatives. Reduction of the olefinic double bond proceeds in good to excellent yields and with α/β-product ratios > 9/1.

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