Cas 128192-22-3,5'-O-(4,4'-Dimethoxytrityl)-N<sup>4</sup>-isobutyryl-2'-deoxycytidine-3'-(N,N-diisopropyl)methylphosphonamidite

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Check Digit Verification of cas no

The CAS Registry Mumber 128192-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,1,9 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128192-22:
(8*1)+(7*2)+(6*8)+(5*1)+(4*9)+(3*2)+(2*2)+(1*2)=123
123 % 10 = 3
So 128192-22-3 is a valid CAS Registry Number.

128192-22-3Upstream product

128192-22-3Downstream Products

191786-70-6 (R)-Methyl-phosphonic acid (2R,3S,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-(4-isobutyrylamino-2-oxo-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 2,2,2-trifluoro-1-trifluoromethyl-ethyl ester

128192-22-3Relevant academic research and scientific papers

An expeditious route to methylphosphonate analogues of DNA

Kuyl-Yeheskiely, E.,Meeuwenoord, N. J.,Marel, G. A. van der,Boom, J. H. van

, p. 40 - 44 (1994)

Protection of the exocyclic amino groups of both nucleobases adenine and guanine with the N,N-dimethylformamidine and cytosine with the isobutyryl group presents a convenient and economical N-protective-group-strategy for the solid-phase synthesis of DNA

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