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55175-33-2

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55175-33-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55175-33-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,7 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55175-33:
(7*5)+(6*5)+(5*1)+(4*7)+(3*5)+(2*3)+(1*3)=122
122 % 10 = 2
So 55175-33-2 is a valid CAS Registry Number.

55175-33-2Relevant articles and documents

Synthesis and biological evaluation of new HIV-1 protease inhibitors with purine bases as P2-ligands

Zhu, Mei,Dong, Biao,Zhang, Guo-Ning,Wang, Ju-Xian,Cen, Shan,Wang, Yu-Cheng

, p. 1541 - 1545 (2019/04/25)

Introducing purine bases to P2-ligands might enhance the potency of Human Immunodeficiency Virus-1 (HIV-1) protease inhibitory because of the carbonyl and NH groups promoting the formation of extensive H-bonding interactions. In this work, thirty-three compounds are synthesized and evaluated, among which inhibitors 16a, 16f and 16j containing N-2-(6-substituted-9H-purin-9-yl)acetamide as the P2-ligands along with 4-methoxylphenylsulfonamide as the P2′-ligand, display potent inhibitory effect on the activity of HIV-1 protease with IC50 43 nM, 42 nM and 68 nM in vitro, respectively.

SYNTHESIS OF MODIFIED AMINO ACIDS CONTAINING NUCLEIC ACID PURINE BASES

Poritere, S. E.,Paegle, R. A.,Lidak, M. Yu.

, p. 104 - 107 (2007/10/02)

The reaction of hydrazides of adenylyl- or hypoxanthinyl-9-alkylcarboxylic acids with sodium nitrite in acid media gives reactive azides of purinyl-9-alkylcarboxylic acids which condense with α(ω)-aminocarboxylic and α,ω-diaminocarboxylic acids to give Nα(Nω)-(adenylyl-9-alkanoyl)aminocarboxylic, Nα-(adenylyl-9-)- and Nω-(hypoxanthinyl-9-alkanoyl)-α,ω-diaminocarboxylic acids.The deamination of Nω-(adenylyl-9-alkanoyl)aminocarboxylic acids gives Nω-(hypoxanthinyl-9-alkanoyl)aminocarboxylic acids.

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