SMILES:

COC1=CC=C(F)C=C1C(=O)NCC2=CC=C(C=C2)C3=N[N](C(C)C(F)(F)F)C(=C3C(N)=O)N
Pirtobrutinib (LOXO-305) Chemical Structure
Chemical Structure
Check the Pirtobrutinib (LOXO-305) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 5-amino-3-[4-[[(5-fluoro-2-methoxybenzoyl)amino]methyl]phenyl]-1-[(2S)-1,1,1-trifluoropropan-2-yl]pyrazole-4-carboxamide
CAS Number 2101700-15-4
Molecular Formula

C22H21F4N5O3
Molecular Weight (MW) 479.43
SMILES COC1=CC=C(F)C=C1C(=O)NCC2=CC=C(C=C2)C3=N[N](C(C)C(F)(F)F)C(=C3C(N)=O)N
InChIKey FWZAWAUZXYCBKZ-NSHDSACASA-N

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 96 mg/mL (200.23 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 48 mg/mL
Water Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

Aliquotting Service

Free Aliquotting Service

Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.

Looking for a specific aliquot size? Reach out to your local sales representative or contact us at orders@selleckchem.com.

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Note: Technical data last updated: Sep 1, 2026.