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31652-74-1

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31652-74-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31652-74-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,6,5 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 31652-74:
(7*3)+(6*1)+(5*6)+(4*5)+(3*2)+(2*7)+(1*4)=101
101 % 10 = 1
So 31652-74-1 is a valid CAS Registry Number.

31652-74-1Relevant articles and documents

Chemoselective N-Deacetylation of Protected Nucleosides and Nucleotides Promoted by Schwartz's Reagent

Ferrari, Valentina,Serpi, Michaela,McGuigan, Christopher,Pertusati, Fabrizio

, p. 799 - 814 (2015/11/17)

Protection and deprotection strategies involving the N-acetyl group are widely utilized in nucleoside and nucleotide chemistry. Herein, we present a mild and selective N-deacetylation methodology, applicable to purine and pyrimidine nucleosides, by means of Schwartz's reagent, compatible with most of the common protecting groups used in nucleoside chemistry.

'Green' methodology for efficient and selective benzoylation of nucleosides using benzoyl cyanide in an ionic liquid

Prasad, Ashok K.,Kumar, Vineet,Malhotra, Shashwat,Ravikumar, Vasulinga T.,Sanghvi, Yogesh S.,Parmar, Virinder S.

, p. 4467 - 4472 (2007/10/03)

Benzoyl cyanide in the ionic liquid 1-methoxyethyl-3-methylimidazolium methanesulfonate has been employed as a 'green' alternative and mild reaction condition protocol to conventional pyridine-benzoyl chloride system for efficient and selective benzoylation of nucleosides (of both the ribo- and deoxyribo-series) at ambient temperatures. The use of benzoyl cyanide-ionic liquid combination has been successfully extended for highly efficient benzoylation of phenols, aromatic amines, benzyl alcohol, aliphatic diols, 3-aminophenol and 2-aminobenzylalcohol, which indicates the versatility of this benzoylating system.

Hydrothermal deamidation of 4-N-acylcytosine nucleoside derivatives: Efficient synthesis of uracil nucleoside esters

Nowak, Ireneusz,Robins, Morris J.

, p. 4903 - 4905 (2007/10/03)

(Chemical Equation Presented) N,O-Peracylated cytidine and 2′-deoxycytidine derivatives in superheated water/DME solutions (oil bath at 125°C) undergo hydrolytic deamidation (and/or N-deacylation). Acylated starting materials derived from arylcarboxylic acids give the corresponding uridine esters cleanly, and such derivatives crystallize selectively from the cooled reaction mixtures in high yields.

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