WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 555765

CAS#: 2055599-51-2

Description: NTP42 is a novel antagonist of the thromboxane prostanoid receptor (TP), currently in development for the treatment of pulmonary arterial hypertension (PAH). PAH is a devastating disease with multiple pathophysiological hallmarks including excessive pulmonary vasoconstriction, vascular remodelling, inflammation, fibrosis, in situ thrombosis and right ventricular hypertrophy.

Price and Availability

Size Price Shipping out time Quantity
100mg USD 950 2 Weeks
200mg USD 1650 2 Weeks
500mg USD 2650 2 Weeks
1g USD 3850 2 Weeks
2g USD 5950 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-01-26. Prices are subject to change without notice.

NTP-42 is in stock.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 555765
Name: NTP42
CAS#: 2055599-51-2
Chemical Formula: C25H23F2N3O5S
Exact Mass: 515.1326
Molecular Weight: 515.5318
Elemental Analysis: C, 58.25; H, 4.50; F, 7.37; N, 8.15; O, 15.52; S, 6.22

Synonym: NTP-42; NTP 42; NTP42;

IUPAC/Chemical Name: N-(tert-Butylcarbamoyl)-5-cyano-2-((4'-(difluoromethoxy)-(1,1'-biphenyl)-3-yl)oxy)benzenesulfonamide


InChi Code: InChI=1S/C25H23F2N3O5S/c1-25(2,3)29-24(31)30-36(32,33)22-13-16(15-28)7-12-21(22)34-20-6-4-5-18(14-20)17-8-10-19(11-9-17)35-23(26)27/h4-14,23H,1-3H3,(H2,29,30,31)

SMILES Code: O=S(C1=CC(C#N)=CC=C1OC2=CC(C3=CC=C(OC(F)F)C=C3)=CC=C2)(NC(NC(C)(C)C)=O)=O

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

Shelf Life:
>3 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:

Additional Information

Signalling through the TP, thromboxane (TX) A2 is a potent vasoconstrictor and mediator of platelet aggregation. It is also a pro-mitogenic, pro-inflammatory and pro-fibrotic agent. Moreover, the TP also mediates the adverse actions of the isoprostane 8-iso-prostaglandin F2α, a free-radical-derived product of arachidonic acid produced in abundance during oxidative injury. Mechanistically, TP antagonists should treat most of the hallmarks of PAH, including inhibiting the excessive vasoconstriction and pulmonary artery remodelling, in situ thrombosis, inflammation and fibrosis.

From haemodynamic assessments, NTP42 reduced the MCT-induced PAH, including mean pulmonary arterial pressure (mPAP) and right systolic ventricular pressure (RSVP), being at least comparable to the standard-of-care drugs Sildenafil or Selexipag in bringing about these effects. Moreover, NTP42 was superior to Sildenafil and Selexipag in significantly reducing pulmonary vascular remodelling, inflammatory mast cell infiltration and fibrosis in MCT-treated animals


Mulvaney EP, Reid HM, Bialesova L, Bouchard A, Salvail D, Kinsella BT. NTP42, a novel antagonist of the thromboxane receptor, attenuates experimentally induced pulmonary arterial hypertension. BMC Pulm Med. 2020;20(1):85. Published 2020 Apr 6. doi:10.1186/s12890-020-1113-2