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141684-85-7

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141684-85-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141684-85-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,6,8 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 141684-85:
(8*1)+(7*4)+(6*1)+(5*6)+(4*8)+(3*4)+(2*8)+(1*5)=137
137 % 10 = 7
So 141684-85-7 is a valid CAS Registry Number.

141684-85-7Downstream Products

141684-85-7Relevant articles and documents

A Highly Stereoselective Synthesis of Anti-HIV 2',3'-Dideoxy- and 2',3'-Didehydro-2',3'-dideoxynucleosides

Beach, J. Warren,Kim, Hea O.,Jeong, Lak S.,Nampalli, Satyanarayana,Islam, Qamrul,et al.

, p. 3887 - 3894 (2007/10/02)

A general total synthesic method for the stereocontrolled synthesis of 2',3'-dideoxy- as well as 2',3'-didehydro-2',3'-dideoxynucleosides is presented.Introduction of an α-phenylselenenyl group at the 2-position of 2,3-dideoxyribosyl acetate directs the glycosyl bond formation to give >/=95percent β-isomer.This 2'-phenylselenenyl nucleoside may be converted to either the 2',3'-dideoxynucleoside by treatment with n-Bu3SnH and Et3B at room temperature or to the unsaturated derivative by treatment with H2O2/cat. pyridine.The application of this method to the syntheses of pyrimidines (ddU, ddT, ddC), 6-substituted purines (ddA, ddI, 6-chloro-ddP, N6-Me-ddA), and 2,6-disubstituted purines (2-F-ddA, 6-chloro-2-amino-ddP) as well as selected 2',3'-didehydro-2',3'-dideoxy derivatives is reported.

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