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221459-89-8

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221459-89-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221459-89-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,4,5 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 221459-89:
(8*2)+(7*2)+(6*1)+(5*4)+(4*5)+(3*9)+(2*8)+(1*9)=128
128 % 10 = 8
So 221459-89-8 is a valid CAS Registry Number.

221459-89-8Downstream Products

221459-89-8Relevant articles and documents

Design and Synthesis of New Acid Cleavable Linkers for DNA Sequencing by Synthesis

Jiang, Min,Tang, Daonian,Zhao, Xiaodong,Li, Qing,Zhuang, Yuan,Wei, Xiaofei,Li, Xiaowei,Liu, Yazhi,Wu, Xin-Yan,Shao, Zhifeng,Gong, Bing,Shen, Yu-Mei

, p. 774 - 785 (2014)

A new kind of acid sensitive tetrahydrofuranyl (THF) linker was synthesized and then reacted with 5-(6)-carboxytetramethylrhodaminesuccinimidyl ester (5(6)-TAMRA, SE), followed by di(N-succinimidyl) carbonate (DSC) and modified 2′-deoxyuridine triphosphate (dUTP); the final product, as a reversible terminator for DNA sequencing by synthesis (DNA SBS), was given obtained and confirmed by 1H-NMR, 31P-NMR, and HRMS with purity of up to 99%. The synthesized dye-labeled terminator incorporated into DNA strand successfully, and the fluorophore was cleaved completely under acidic conditions. The preliminary results encourage us to explore more acid-sensitive linkers for DNA SBS to increase the cleavage efficiency under weakly acidic conditions.

Total synthesis of reblastatin

Wrona, Iwona E.,Gabarda, Ana E.,Evano, Gwilherm,Panek, James S.

, p. 15026 - 15027 (2007/10/03)

Enantioselective total synthesis of reblastatin is described. The synthesis highlights hydrozirconation, transmetalation, aldehyde addition sequence to install E-trisubstituted olefin and C7 stereocenter, and the first use of an intramolecular Buchwald-like amidation reaction to close the 19-membered macrolactam. Copyright

Expeditious syntheses of sugar-modified nucleosides and collections thereof exploiting furan-, pyrrole-, and thiophene-based siloxy dienes

Rassu, Gloria,Zanardi, Franca,Battistini, Lucia,Gaetani, Enrico,Casiraghi, Giovanni

, p. 168 - 180 (2007/10/03)

A series of individual sugar-modified pyrimidine nucleosides including enantiomerically enriched 2',3'-dideoxynucleosides 14a-c (α and β anomers of L- and D-series), 2',3'-dideoxy-4'-thionucleosides 21a-c (α and β anomers of L- and D-series), and 2',3'-dideoxy-4'-azanucleosides 28a-c (β anomers of L- and D-series) were synthesized, with uniform chemistry and high stereochemical efficiency, exploiting a triad of versatile heterocyclic siloxy dienes, namely, 2-(tert-butyldimethylsiloxy)furan (TBSOF), 2-(tert- butyldimethylsiloxy)thiophene (TBSOT), and N-(tert-butoxycarbonyl)-2-(tert- butyldimethylsiloxy)pyrrole (TBSOP). The synthetic procedure advantageously used both enantiomers of glyceraldehyde acetonide (D-1 and L-1) as sources of chirality and as synthetic equivalents of the formyl cation. The outlined chemistry also allowed for the rapid assemblage of a 30-member collection of racemic nucleosides (D,L-L) as well as one 15-member ensemble of chiral analogues (L-L), along with some related sublibraries.

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