Bambuterol-d9 ( HCl) is the deuterated form of Bambuterol. Bambuterol ((±)-Bambuterol) is a long-acting beta-adrenoceptor agonist (LABA), the original drug of terbutaline.

Physicochemical Properties

Molecular Formula	C18H21D9CLN3O5
Molecular Weight	412.96
Exact Mass	412.243
CAS #	1794810-59-5
Related CAS #	Bambuterol hydrochloride;81732-46-9;Bambuterol;81732-65-2
PubChem CID	71313617
Appearance	White to off-white solid powder
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	8
Heavy Atom Count	27
Complexity	446
Defined Atom Stereocenter Count	0
SMILES	[2H]C([2H])([2H])C(C([2H])([2H])[2H])(C([2H])([2H])[2H])NCC(C1=CC(=CC(=C1)OC(=O)N(C)C)OC(=O)N(C)C)O.Cl
InChi Key	LBARATORRVNNQM-KYRNGWDOSA-N
InChi Code	InChI=1S/C18H29N3O5.ClH/c1-18(2,3)19-11-15(22)12-8-13(25-16(23)20(4)5)10-14(9-12)26-17(24)21(6)7;/h8-10,15,19,22H,11H2,1-7H3;1H/i1D3,2D3,3D3;
Chemical Name	[3-(dimethylcarbamoyloxy)-5-[2-[[1,1,1,3,3,3-hexadeuterio-2-(trideuteriomethyl)propan-2-yl]amino]-1-hydroxyethyl]phenyl] N,N-dimethylcarbamate;hydrochloride
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: Please store this product in a sealed and protected environment, avoid exposure to moisture.
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	Drug compounds have included stable heavy isotopes of carbon, hydrogen, and other elements, mostly as quantitative tracers while the drugs were being developed. Because deuteration may have an effect on a drug's pharmacokinetics and metabolic properties, it is a cause for concern [1].
References	[1]. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216. [2]. Bambuterol, From Wikipedia.

Solubility Data

Solubility (In Vitro)

DMSO: 25 mg/mL (60.54 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (6.05 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 (6.05 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 (6.05 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	2.4215 mL	12.1077 mL	24.2154 mL
	5 mM	0.4843 mL	2.4215 mL	4.8431 mL
	10 mM	0.2422 mL	1.2108 mL	2.4215 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.