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CAS#: 448232-80-1 (free base)

Description: Naquotinib, also known as ASP8273, is an orally available, irreversible, third-generation, mutant-selective, epidermal growth factor receptor (EGFR) inhibitor, with potential antineoplastic activity. Upon oral administration, ASP8273 covalently binds to and inhibits the activity of mutant forms of EGFR, including the T790M EGFR mutant, thereby preventing EGFR-mediated signaling. This may both induce cell death and inhibit tumor growth in EGFR-overexpressing tumor cells. EGFR, a receptor tyrosine kinase mutated in many tumor cell types, plays a key role in tumor cell proliferation and tumor vascularization. ASP8273 preferentially inhibits mutated forms of EGFR including T790M, a secondarily acquired resistance mutation, and may have therapeutic benefits in tumors with T790M-mediated resistance when compared to other EGFR tyrosine kinase inhibitors.

Synonym: ASP8273; ASP-8273; ASP 8273; Naquotinib free base.

IUPAC/Chemical Name: (R)-5-((1-acryloylpyrrolidin-3-yl)oxy)-6-ethyl-3-((4-(4-(4-methylpiperazin-1-yl)piperidin-1-yl)phenyl)amino)pyrazine-2-carboxamide


Size                      Price

10mg                   Not available
100mg                 Not available
1g                         Ask price
Naquotinib free base is not in stock, 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 to inquire quote.


Name: Naquotinib free base
CAS#: 448232-80-1 (free base)
Chemical Formula: C30H42N8O3
Exact Mass: 562.338
Molecular Weight: 562.719
Elemental Analysis: C, 64.03; H, 7.52; N, 19.91; O, 8.53


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).


Related CAS#
CAS#1448237-05-5 (Naquotinib mesylate);
CAS#1448232-80-1 (Naquotinib free base).

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