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

MedKoo CAT#: 407204

CAS#: 1648863-90-4

Description: G‑5555 is a potent and selective PAK1 inhibitor. G‑5555 showed excellent kinase selectivity and inhibited only eight out of the 235 kinases tested other than PAK1 with inhibition >70%: PAK2, PAK3, KHS1, Lck, MST3, MST4, SIK2, and YSK1. G‑5555 demonstrated in vivo PK/PD effects consistent with the observed potency and pharmacokinetic properties. G‑5555 may be a potential cancer drug candidate. The p21-activated kinases (PAKs), which belong to the sterile-20 (STE20) family of kinases, play important roles in the regulation of key cellular phenomena including cell migration, proliferation, and survival mechanisms.

Price and Availability


USD 295

USD 550

USD 1050

G‑5555, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 407204
Name: G‑5555
CAS#: 1648863-90-4
Chemical Formula: C25H25ClN6O3
Exact Mass: 492.16767
Molecular Weight: 492.964
Elemental Analysis: C, 60.91; H, 5.11; Cl, 7.19; N, 17.05; O, 9.74

Related CAS #: 1648863-90-4   1648863-93-7  

Synonym: G‑5555; G 5555; G5555.

IUPAC/Chemical Name: 8-(((2r,5r)-5-amino-1,3-dioxan-2-yl)methyl)-6-(2-chloro-4-(6-methylpyridin-2-yl)phenyl)-2-(methylamino)pyrido[2,3-d]pyrimidin-7(8H)-one


InChi Code: InChI=1S/C25H25ClN6O3/c1-14-4-3-5-21(30-14)15-6-7-18(20(26)9-15)19-8-16-10-29-25(28-2)31-23(16)32(24(19)33)11-22-34-12-17(27)13-35-22/h3-10,17,22H,11-13,27H2,1-2H3,(H,28,29,31)/t17-,22-

SMILES Code: ClC1=CC(C2=NC(C)=CC=C2)=CC=C1C(C(N(C3=N4)C[C@H]5OC[C@H](N)CO5)=O)=CC3=CN=C4NC

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).

Harmonized System Code:


Chudi O. Ndubaku,*,†,⊥ James J. Crawford,*,† Joy Drobnick,† Ignacio Aliagas,† David Campbell,‡ Ping Dong,§ Laura M. Dornan,† Sergio Duron,‡ Jennifer Epler,† Lewis Gazzard,† Christopher E. Heise,† Klaus P. Hoeflich,†,# Diana Jakubiak,† Hank La,† Wendy Lee,† Baiwei Lin,† Joseph P. Lyssikatos,†,○Jasna Maksimoska,∥,∇ Ronen Marmorstein,∥ Lesley J. Murray,† Thomas O’Brien,† Angela Oh,†Sreemathy Ramaswamy,† Weiru Wang,† Xianrui Zhao,† Yu Zhong,† Elizabeth Blackwood,†and Joachim Rudolph† Design of Selective PAK1 Inhibitor G‑5555: Improving Properties by Employing an Unorthodox Low‑pKa Polar Moiety. ACS Med. Chem. Lett. Publication Date (Web): October 31, 2015 (Letter) DOI: 10.1021/acsmedchemlett.5b00398