CAS No. 10538-99-5

Batch: Purity:97.08
LY 345899 Chemical Structure
Chemical Structure
Check the LY 345899 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 10538-99-5
Molecular Formula

C20H21N7O7

Molecular Weight (MW) 471.42

Ordering Information

Biological Activity

LY345899 is a folate analog that acts as a potent dual inhibitor of methylene tetrahydrofolate dehydrogenase 1 (MTHFD1; IC50 = 96 nM) and methylene tetrahydrofolate dehydrogenase 2 (MTHFD2; IC=. By targeting these enzymes in the folate pathway, it disrupts NADPH and redox homeostasis, leading to cellular death under oxidative stress. Consequently, LY345899 significantly suppresses tumor growth and reduces tumor weight in colorectal cancer patient-derived xenograft models. [1][2]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 94 mg/mL (199.39 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol 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).
Note: Technical data last updated: Sep 1, 2026.