Ensartinib free base

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

MedKoo CAT#: 206013

CAS#: 1370651-20-9 (free base),

Description: Ensartinib, also known as X-396, is an orally available small molecule inhibitor of the receptor tyrosine kinase anaplastic lymphoma kinase (ALK) with potential antineoplastic activity. Upon oral administration, X-396 binds to and inhibits ALK kinase, ALK fusion proteins and ALK point mutation variants. Inhibition of ALK leads to the disruption of ALK-mediated signaling and eventually inhibits tumor cell growth in ALK-expressing tumor cells. ALK belongs to the insulin receptor superfamily and plays an important role in nervous system development.

Chemical Structure

Ensartinib free base
CAS# 1370651-20-9 (free base),

Theoretical Analysis

MedKoo Cat#: 206013
Name: Ensartinib free base
CAS#: 1370651-20-9 (free base),
Chemical Formula: C26H27Cl2FN6O3
Exact Mass: 560.1506
Molecular Weight: 561.4394
Elemental Analysis: C, 55.62; H, 4.85; Cl, 12.63; F, 3.38; N, 14.97; O, 8.55

Price and Availability

Size Price Availability Quantity
25.0mg USD 550.0 2 Weeks
50.0mg USD 950.0 2 Weeks
100.0mg USD 1650.0 2 Weeks
200.0mg USD 2950.0 2 Weeks
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Related CAS #: 2137030-98-7 (HCl)   1370651-20-9 (free base)    

Synonym: X396; X-396; X 396; Ensartinib; X376 analog; X-376 analog; X 376 analog;

IUPAC/Chemical Name: 6-amino-5-[(1R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]-N-{4-[(3R,5S)-3,5-dimethylpiperazine-1-carbonyl]phenyl}pyridazine-3-carboxamide


InChi Code: InChI=1S/C26H27Cl2FN6O3/c1-13-11-35(12-14(2)31-13)26(37)16-4-6-17(7-5-16)32-25(36)20-10-21(24(30)34-33-20)38-15(3)22-18(27)8-9-19(29)23(22)28/h4-10,13-15,31H,11-12H2,1-3H3,(H2,30,34)(H,32,36)/t13-,14+,15-/m1/s1

SMILES Code: O=C(C1=NN=C(N)C(O[C@@H](C2=C(Cl)C=CC(F)=C2Cl)C)=C1)NC3=CC=C(C(N4C[C@@H](C)N[C@@H](C)C4)=O)C=C3

Appearance: Solid powder

Purity: >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).

Solubility: 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: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 561.4394 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Insights into ALK-driven cancers revealed through development of novel ALK tyrosine kinase inhibitors Christine M. Lovly, Johannes M. Heuckmann, Elisa de Stanchina, Heidi Chen, Roman K. Thomas, Chris Liang, William Pao Cancer Res. Author manuscript; available in PMC 2012 July 15.Published in final edited form as: Cancer Res. 2011 July 15; 71(14): 4920–4931. Published online 2011 May 25. doi: 10.1158/0008-5472.CAN-10-3879 PMCID: PMC3138877

2: ALK and NSCLC: Targeted therapy with ALK inhibitors Bengt Hallberg, Ruth H. Palmer F1000 Med Rep. 2011; 3: 21. Published online 2011 November 1. doi: 10.3410/M3-21 PMCID: PMC3206708

3: A Systemic Review of Resistance Mechanisms and Ongoing Clinical Trials in ALK-Rearranged Non-Small Cell Lung Cancer Khashayar Esfahani, Jason Scott Agulnik, Victor Cohen Front Oncol. 2014; 4: 174. Prepublished online 2014 June 6. Published online 2014 July 21. doi: 10.3389/fonc.2014.00174 PMCID: PMC4104550

4: ALK Inhibitors, a Pharmaceutical Perspective Elena Ardini, Arturo Galvani Front Oncol. 2012; 2: 17. Prepublished online 2011 December 13. Published online 2012 February 22. doi: 10.3389/fonc.2012.00017 PMCID: PMC3356102

5: Review of the current targeted therapies for non-small-cell lung cancer Kim-Son H Nguyen, Joel W Neal, Heather Wakelee World J Clin Oncol. 2014 October 10; 5(4): 576–587. Published online 2014 October 10. doi: 10.5306/wjco.v5.i4.576 PMCID: PMC4129523

6: Development of anaplastic lymphoma kinase (ALK) inhibitors and molecular diagnosis in ALK rearrangement-positive lung cancer Eiji Iwama, Isamu Okamoto, Taishi Harada, Koichi Takayama, Yoichi Nakanishi Onco Targets Ther. 2014; 7: 375–385. Published online 2014 March 5. doi: 10.2147/OTT.S38868 PMCID: PMC3949762

7: Aminopyridyl/Pyrazinyl Spiro[indoline-3,4′-piperidine]-2-ones As Highly Selective and Efficacious c-Met/ALK Inhibitors Jingrong Li, Nan Wu, Yuanxin Tian, Jiajie Zhang, Shuguang Wu ACS Med Chem Lett. 2013 August 8; 4(8): 806–810. Published online 2013 July 12. doi: 10.1021/ml400203d PMCID: PMC4027565

8: Molecular pathways and therapeutic targets in lung cancer Emma Shtivelman, Thomas Hensing, George R. Simon, Phillip A. Dennis, Gregory A. Otterson, Raphael Bueno, Ravi Salgia Oncotarget. 2014 March; 5(6): 1392–1433. Published online 2014 April 8.  PMCID: PMC4039220

9: Targeting Genomic Alterations in Squamous Cell Lung Cancer Kalyan Mantripragada, Humera Khurshid Front Oncol. 2013; 3: 195. Prepublished online 2013 April 1. Published online 2013 August 5. doi: 10.3389/fonc.2013.00195 PMCID: PMC3733025

10: Molecularly targeted approaches herald a new era of non-small-cell lung cancer treatment Hiroyasu Kaneda, Takeshi Yoshida, Isamu Okamoto Cancer Manag Res. 2013; 5: 91–101. Published online 2013 June 7. doi: 10.2147/CMAR.S32973PMCID: PMC3682814

11: Crizotinib-Resistant Mutants of EML4-ALK Identified Through an Accelerated Mutagenesis Screen Sen Zhang, Frank Wang, Jeffrey Keats, Xiaotian Zhu, Yaoyu Ning, Scott D Wardwell, Lauren Moran, Qurish K Mohemmad, Rana Anjum, Yihan Wang, Narayana I Narasimhan, David Dalgarno, William C Shakespeare, Juan J Miret, Tim Clackson, Victor M RiveraChem Biol Drug Des. 2011 December; 78(6): 999–1005. doi: 10.1111/j.1747-0285.2011.01239.xPMCID: PMC3265718

12: New Strategies for Treatment of ALK Rearranged Non-Small Cell Lung Cancers Takaaki Sasaki, Pasi A. Jänne Clin Cancer Res. Author manuscript; available in PMC 2012 December 1.Published in final edited form as: Clin Cancer Res. 2011 December 1; 17(23): 7213–7218. Published online 2011 October 18. doi: 10.1158/1078-0432.CCR-11-1404 PMCID: PMC3477548

Additional Information

 CAS#1365267-27-1 (Referenced)