SMILES:

C(C(C1C(=C(C(=O)O1)OP(=O)([O-])[O-])O)O)O.[Na+].[Na+]
Sodium L-Ascorbyl-2-Phosphate (SAP) Chemical Structure
Chemical Structure
Check the Sodium L-Ascorbyl-2-Phosphate (SAP) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name trisodium;[(2R)-2-[(1S)-1,2-dihydroxyethyl]-3-oxido-5-oxo-2H-furan-4-yl] phosphate
CAS Number 66170-10-3
Molecular Formula

C6H6O9P.3Na
Molecular Weight (MW) 322.05
SMILES C(C(C1C(=C(C(=O)O1)OP(=O)([O-])[O-])O)O)O.[Na+].[Na+]
InChIKey YRWWOAFMPXPHEJ-OFBPEYICSA-K

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
Water 64 mg/mL
DMSO Insoluble
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
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).

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