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MedKoo CAT#: 319704

CAS#: 168266-90-8 (free)

Description: Vofopitant (also known as GR-205,171) is an NK1 receptor antagonist. It has antiemetic effects as with other NK1 antagonists, and also shows anxiolytic actions in animals. It was trialled for applications such as the treatment of social phobia and post-traumatic stress disorder, but did not prove sufficiently effective to be marketed.

Price and Availability

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Pricing updated 2020-08-10. Prices are subject to change without notice.

Vofopitant is not in stock, but may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 319704
Name: Vofopitant
CAS#: 168266-90-8 (free)
Chemical Formula: C21H23F3N6O
Exact Mass: 432.1885
Molecular Weight: 432.4512
Elemental Analysis: C, 58.33; H, 5.36; F, 13.18; N, 19.43; O, 3.70

Related CAS #: 168266-90-8 (free)   168266-51-1 (HCl)    

Synonym: GR-205,171; GR205,171; GR 205,171; GR-205171; GR205171; GR 205171;Vofopitant.

IUPAC/Chemical Name: (2S,3S)-N-[(2-methoxy-5-[5-(trifluoromethyl)tetrazol-1-yl]phenyl)methyl]-2-phenylpiperidin-3-amine


InChi Code: InChI=1S/C21H23F3N6O/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/t17-,19-/m0/s1


Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


1: Renoldi G, Invernizzi RW. Blockade of tachykinin NK1 receptors attenuates stress-induced rise of extracellular noradrenaline and dopamine in the rat and gerbil medial prefrontal cortex. J Neurosci Res. 2006 Oct;84(5):961-8. PubMed PMID: 16862563.

2: Gannon RL, Millan MJ. The selective tachykinin neurokinin 1 (NK1) receptor antagonist, GR 205,171, stereospecifically inhibits light-induced phase advances of hamster circadian activity rhythms. Eur J Pharmacol. 2005 Dec 19;527(1-3):86-93. Epub 2005 Nov 22. PubMed PMID: 16307740.

3: Serres F, Sartori SB, Halton A, Pei Q, Rochat C, Singewald N, Sharp T, Millan MJ. Stereoselective and region-specific induction of immediate early gene expression in rat parietal cortex by blockade of neurokinin 1 receptors. J Psychopharmacol. 2006 Jul;20(4):570-6. Epub 2005 Oct 4. Erratum in: J
Psychopharmacol. 2011 Jun;25(6):853. Millan, Mark [corrected to Millan, Mark J]. PubMed PMID: 16204322.

4: Michl T, Jocic M, Schuligoi R, Holzer P. Role of tachykinin receptors in the central processing of afferent input from the acid-threatened rat stomach. Regul Pept. 2001 Dec 15;102(2-3):119-26. PubMed PMID: 11730984.

5: Jocic M, Schuligoi R, Schöninkle E, Pabst MA, Holzer P. Cooperation of NMDA and tachykinin NK(1) and NK(2) receptors in the medullary transmission of vagal afferent input from the acid-threatened rat stomach. Pain. 2001 Jan;89(2-3):147-57. PubMed PMID: 11166470.