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MedKoo CAT#: 205660

CAS#: 845272-21-1

Description: Varlitinib, also known as ARRY-543 and ASLAN001, is an orally bioavailable inhibitor of the epidermal growth factor receptor family with potential antineoplastic activity. Varlitinib selectively and reversibly binds to both EGFR (ErbB-1) and Her-2/neu (ErbB-2) and prevents their phosphorylation and activation, which may result in inhibition of the associated signal transduction pathways, inhibition of cellular proliferation and cell death. EGFR and Her-2 play important roles in cell proliferation and differentiation and are upregulated in various human tumor cell types.

Price and Availability

Size Price Shipping out time Quantity
10mg USD 90 Same day
25mg USD 150 Same day
50mg USD 250 Same day
100mg USD 450 Same day
200mg USD 650 Same day
500mg USD 1450 Same day
1g USD 2150 Same day
2g USD 3850 Same day
5g USD 5950 Same day
Inquire bulk and customized quantity

Pricing updated 2020-07-12. Prices are subject to change without notice.

Varlitinib (free base), purity > 98%, is in stock. The same day shipping out after order is received. Delivery time: overnight (USA/Canada); 3-5 days (worldwide).

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 205660
Name: Varlitinib
CAS#: 845272-21-1
Chemical Formula: C22H19ClN6O2S
Exact Mass: 466.09787
Molecular Weight: 466.94
Elemental Analysis: C, 56.59; H, 4.10; Cl, 7.59; N, 18.00; O, 6.85; S, 6.87

Synonym: ASLAN001; ASLAN-001; ASLAN 001; AR 00334543; ARRY334543; ARRY-334543; ARRY543; ARRY-543; ARRY 543; Varlitinib.

IUPAC/Chemical Name: (R)-N4-(3-chloro-4-(thiazol-2-ylmethoxy)phenyl)-N6-(4-methyl-4,5-dihydrooxazol-2-yl)quinazoline-4,6-diamine.


InChi Code: InChI=1S/C22H19ClN6O2S/c1-13-10-31-22(27-13)29-14-2-4-18-16(8-14)21(26-12-25-18)28-15-3-5-19(17(23)9-15)30-11-20-24-6-7-32-20/h2-9,12-13H,10-11H2,1H3,(H,27,29)(H,25,26,28)/t13-/m1/s1


Technical Data

White solid powder

>98% (or refer to the Certificate of Analysis)

Certificate of Analysis:

Safety Data Sheet (SDS):

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).

HS Tariff Code:

Additional Information

ARRY-543 is a novel, oral ErbB family inhibitor that, unlike approved ErbB inhibitors, targets all members of the ErbB family, including ErbB3, either directly or indirectly, and has potential advantages in treating tumors that signal through multiple ErbB family members. ARRY-543 showed benefit in preclinical tumor models that signal through multiple ErbB family members, as well as its efficacy in preclinical models when compared to, and combined with, Herceptin (trastuzumab), Xeloda (capecitabine) and Taxotere (docetaxel) – widely used treatments for solid tumors.


 1. Wallace, Eli et al, Preparation of aminoquinazolines as receptor tyrosine kinase inhibitors, U.S. Pat. Appl. Publ., 20050043334, 24 Feb 2005.