Molecular Weight: 176.12 g/mol

Fosfomycin calcium Chemical Structure
Chemical Structure
Check the Fosfomycin calcium product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

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
5%TFA 3.06 mg/mL
DMSO 0.1 mg/mL (0.56 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
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).

Chemical Information

IUPAC Name calcium [(2R,3S)-3-methyloxiran-2-yl]-dioxido-oxo-λ5-phosphane
CAS Number 26472-47-9
Molecular Formula

C3H5O4P.Ca
Molecular Weight (MW) 176.12
SMILES CC1C(O1)P(=O)([O-])[O-].[Ca+2]
InChIKey YMZJBJPWTXJQMR-LJUKVTEVSA-L

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