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

MedKoo CAT#: 204430

CAS#: 1095253-39-6

Description: ARQ-621 is an allosteric, potent and selective inhibitor of Eg5, a microtubule-based ATPase motor protein involved in cell division. Over-expression of Eg5 causes genomic instability and tumor formation in mice; therefore, Eg5 is a potential anti-cancer target. Preclinical data shows anti-tumor activity of ARQ 621 across a wide range of cell lines from human solid and hematological malignancies.

Chemical Structure

CAS# 1095253-39-6

Theoretical Analysis

MedKoo Cat#: 204430
Name: ARQ-621
CAS#: 1095253-39-6
Chemical Formula: C28H24Cl2FN5O2
Exact Mass: 551.12911
Molecular Weight: 552.42686
Elemental Analysis: C, 60.88; H, 4.38; Cl, 12.84; F, 3.44; N, 12.68; O, 5.79

Price and Availability

Size Price Availability Quantity
5.0mg USD 465.0 2 Weeks
25.0mg USD 1165.0 2 Weeks
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Synonym: ARQ621; ARQ 621; ARQ-621.

IUPAC/Chemical Name: (R)-N-(3-aminopropyl)-3-chloro-N-(1-(7-chloro-4-oxo-3-(phenylamino)-3,4-dihydroquinazolin-2-yl)but-3-yn-1-yl)-2-fluorobenzamide


InChi Code: InChI=1S/C28H24Cl2FN5O2/c1-2-8-24(35(16-7-15-32)27(37)21-11-6-12-22(30)25(21)31)26-33-23-17-18(29)13-14-20(23)28(38)36(26)34-19-9-4-3-5-10-19/h1,3-6,9-14,17,24,34H,7-8,15-16,32H2/t24-/m1/s1

SMILES Code: O=C(N(CCCN)[C@@H](C(N1NC2=CC=CC=C2)=NC3=C(C=CC(Cl)=C3)C1=O)CC#C)C4=CC=CC(Cl)=C4F

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: >5 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 552.42686 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: Rath O, Kozielski F. Kinesins and cancer. Nat Rev Cancer. 2012 Jul 24;12(8):527-39. doi: 10.1038/nrc3310. Review. PubMed PMID: 22825217.


5.0mg / USD 465.0

Additional Information