Nucleoside-Analog-2 is a 4'-azidocytidine analog that targets HCV (hepatitis C virus) replication. Nucleoside-Analog-2 is a reagent for click chemistry. It has an Azide (N3) moiety and could undergo CuAAc (copper-catalyzed azide-alkyne cycloaddition reaction) with compounds bearing an Alkyne group. SPAAC (Strain-promoted alkyne-azide cycloaddition) may also happen with compounds bearing a BCN or DBCO group.

Physicochemical Properties

Molecular Formula	C9H11N5O6
Molecular Weight	285.213541269302
Exact Mass	285.07
CAS #	876708-01-9
PubChem CID	25185460
Appearance	Light brown to gray solid powder
LogP	-1.5
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	8
Rotatable Bond Count	3
Heavy Atom Count	20
Complexity	517
Defined Atom Stereocenter Count	4
SMILES	N([C@]1([C@@H](O)[C@H](O)[C@H](N2C=CC(=O)NC2=O)O1)CO)=[N+]=[N-]
InChi Key	FHPJZSIIXUQGQE-XZMZPDFPSA-N
InChi Code	InChI=1S/C9H11N5O6/c10-13-12-9(3-15)6(18)5(17)7(20-9)14-2-1-4(16)11-8(14)19/h1-2,5-7,15,17-18H,3H2,(H,11,16,19)/t5-,6-,7+,9+/m0/s1
Chemical Name	1-[(2R,3S,4S,5R)-5-azido-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

ln Vitro	In order to prevent the replication of the Hepatitis C virus (HCV), Nucleoside-Analog-2 is a 4'-Azidocytidine analogue. Citation for substance 12[1].
References	[1]. The design, synthesis, and antiviral activity of 4'-azidocytidine analogues against hepatitis C virus replication: the discovery of 4'-azidoarabinocytidine. J Med Chem. 2009 Jan 8;52(1):219-23.

Solubility Data

Solubility (In Vitro)

DMSO : 33.33 mg/mL (116.86 mM) H2O : 20 mg/mL (70.12 mM)

Solubility (In Vivo)

Solubility in Formulation 1: 2.5 mg/mL (8.77 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 2.5 mg/mL (8.77 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: 2.5 mg/mL (8.77 mM) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly. Solubility in Formulation 4: 16.67 mg/mL (58.45 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication (<60°C).  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	3.5062 mL	17.5309 mL	35.0619 mL
	5 mM	0.7012 mL	3.5062 mL	7.0124 mL
	10 mM	0.3506 mL	1.7531 mL	3.5062 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.