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155831-63-3

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155831-63-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155831-63-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,3 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 155831-63:
(8*1)+(7*5)+(6*5)+(5*8)+(4*3)+(3*1)+(2*6)+(1*3)=143
143 % 10 = 3
So 155831-63-3 is a valid CAS Registry Number.

155831-63-3Relevant articles and documents

Synthesis and anti-HIV-1 activities of 6-arylthio and 6- arylselenoacyclonucleosides

Pan,Chen,Piras,Dutschman,Rowe,Cheng,Chu -

, p. 177 - 185 (2007/10/02)

6-Arylthio and 6-arylselenoacyclonucleosides was synthesized and tested for the ability to inhibit replication of HIV-1. Lithiation of acyclonucleosides with LDA followed by reaction with the electrophiles phenyl disulfide, diphenyl diselenide, 2,2'-dipyrdyl disulfide or 2,2'-dipyridyl diselenide afforded 6-(arylthio or arylseleno)acyclonucleosides 5a-c, 6, 7, 9, 15a-c, 17a-c. Compounds 19a-c and 20a-c were obtained by deprotection of corresponding TBDMS derivatives. Dehydrated products 16a, and 18a-c were also formed during the reactions. 5-Ethyl-6-(α-pyridylthio or α-pyridylseleno) disubstituted acyclouracils 6 and 7 were more active against HIV-1 in both MT-2 and CEM-IW cell lines than AZT, DDC, DDI or D4T. The EC50 of 6 against HIV-1 in CEM-IW cell was in the nanomolar range with a therapeutic index of 1100.

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