5'-O-TBDMS-dA is a modified nucleoside that may be utilized to prepare DNA or RNA.

Physicochemical Properties

Molecular Formula	C16H27N5O3SI
Molecular Weight	365.50
Exact Mass	365.188
CAS #	51549-30-5
PubChem CID	10320127
Appearance	White to off-white solid powder
LogP	2.659
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	5
Heavy Atom Count	25
Complexity	475
Defined Atom Stereocenter Count	3
SMILES	CC(C)(C)[Si](C)(C)OC[C@@H]1[C@H](C[C@@H](O1)N2C=NC3=C(N=CN=C32)N)O
InChi Key	HGLRBQHXIBHZTD-QJPTWQEYSA-N
InChi Code	InChI=1S/C16H27N5O3Si/c1-16(2,3)25(4,5)23-7-11-10(22)6-12(24-11)21-9-20-13-14(17)18-8-19-15(13)21/h8-12,22H,6-7H2,1-5H3,(H2,17,18,19)/t10-,11+,12+/m0/s1
Chemical Name	(2R,3S,5R)-5-(6-aminopurin-9-yl)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]oxolan-3-ol
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 Note: This product requires protection from light (avoid light exposure) during transportation and storage.
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

Solubility Data

Solubility (In Vitro)

DMSO : 100 mg/mL (273.60 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (6.84 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. 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 (6.84 mM) (saturation unknown) 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. 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 (6.84 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. 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.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.7360 mL	13.6799 mL	27.3598 mL
	5 mM	0.5472 mL	2.7360 mL	5.4720 mL
	10 mM	0.2736 mL	1.3680 mL	2.7360 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.