Vofopitant diHCl (GR 205171A) is a potent, selective, orally bioavailable tachykinin NK1 receptor blocker (antagonist). It inhibits/disrupts the binding of [3H]SP to NK1 on rat and human cell membranes with pKis of 9.5 and 10.6 respectively. , may be used to become a broad spectrum (a wide range) antiemetic.

Physicochemical Properties

Molecular Formula	C21H23N6OF3.2[HCL]
Molecular Weight	505.364
Exact Mass	504.142
CAS #	168266-51-1
Related CAS #	Vofopitant;168266-90-8
PubChem CID	6918330
Appearance	White to off-white solid powder
Boiling Point	542.5ºC at 760mmHg
Flash Point	281.9ºC
Vapour Pressure	7.83E-12mmHg at 25°C
LogP	5.596
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	6
Heavy Atom Count	33
Complexity	562
Defined Atom Stereocenter Count	2
SMILES	COC1=C(C=C(C=C1)N2C(=NN=N2)C(F)(F)F)CN[C@H]3CCCN[C@H]3C4=CC=CC=C4.Cl.Cl
InChi Key	YVNRXILPJNISEM-FFUVTKDNSA-N
InChi Code	InChI=1S/C21H23F3N6O.2ClH/c1-31-18-10-9-16(30-20(21(22,23)24)27-28-29-30)12-15(18)13-26-17-8-5-11-25-19(17)14-6-3-2-4-7-14;;/h2-4,6-7,9-10,12,17,19,25-26H,5,8,11,13H2,1H3;2*1H/t17-,19-;;/m0../s1
Chemical Name	(2S,3S)-N-[[2-methoxy-5-[5-(trifluoromethyl)tetrazol-1-yl]phenyl]methyl]-2-phenylpiperidin-3-amine;dihydrochloride
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 (e.g. under nitrogen), 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

References

[1]. GR205171: a novel antagonist with high affinity for the tachykinin NK1 receptor, and potent broad-spectrum anti-emetic activity. Regul Pept. 1996 Aug 27;65(1):45-53.

Solubility Data

Solubility (In Vitro)

H2O : ~33.33 mg/mL (~65.95 mM) DMSO : ~33.33 mg/mL (~65.95 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (4.95 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 (4.95 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 (4.95 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. Solubility in Formulation 4: 50 mg/mL (98.94 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	1.9788 mL	9.8939 mL	19.7879 mL
	5 mM	0.3958 mL	1.9788 mL	3.9576 mL
	10 mM	0.1979 mL	0.9894 mL	1.9788 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.