Gefitinib-based PROTAC 3

Catalog No. size PriceQuantity
M7143-2 2mg solid $86
M7143-10 10mg solid $356



Product Information:

NTN21277, also known as Gefitinib-based PROTAC 3 is a VHL-recruiting PROTAC that induces the degradation of EGFR and EGFR mutants with DC50 of 11.7 nM and 22.3 nM for HCC827 cell (Exon 19 del) and H3255 cell (L858R). NTN21277 has CAS#2230821-27-7, and no code name. For the convenience of scientific communication, we named it as NTN21277 (generated by Inchi key plus CAS#) according to Hodoodo Chemical Nomenclature


Chemical Formula: C47H57ClFN7O8S


Exact Mass: 933.3662


Molecular Weight: 934.5224


Elemental Analysis: C, 60.41; H, 6.15; Cl, 3.79; F, 2.03; N, 10.49; O, 13.70; S, 3.43




Gefitinib-based PROTAC 3



NTN 21277


Chemical Name: (2S,4R)-1-((S)-2-(3-(2-((5-((4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)oxy)pentyl)oxy)ethoxy)propanamido)-3,3-dimethylbutanoyl)-4-hydroxy-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide


InChi Key:



InChi Code: InChI=1S/C47H57ClFN7O8S/c1-29-42(65-28-53-29)31-11-9-30(10-12-31)25-50-45(59)38-22-33(57)26-56(38)46(60)43(47(2,3)4)55-41(58)15-18-63-20-19-62-16-7-6-8-17-64-40-23-34-37(24-39(40)61-5)51-27-52-44(34)54-32-13-14-36(49)35(48)21-32/h9-14,21,23-24,27-28,33,38,43,57H,6-8,15-20,22,25-26H2,1-5H3,(H,50,59)(H,55,58)(H,51,52,54)/t33-,38+,43-/m1/s1


Smiles Code:




Technical Data:


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

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: 2934.99.9001


In Vitro

H3255 cells expressing L858R EGFR treated with Gefitinib-based PROTAC 3 (25 nM-10 μM; 24 hours), HCC827 cells expressing exon 19 del EGFR treated with Gefitinib-based PROTAC 3 (100 nM-10 μM; 24 hours), which enables the degradation of both exon-19 deletion EGFR as well as the mutant isoform containing the L858R activating point mutation, while sparing the WT EGFR.





  1. Burslem GM, et al. The Advantages of Targeted Protein Degradation Over Inhibition: An RTK Case Study. Cell Chem Biol. 2018 Jan 18;25(1):67-77.e3.


Products are for research use only. Not for human use.

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