Monopotassium phosphate

DB09413ApprovedInvestigationalVet approvedSmall molecule

Monopotassium phosphate is an ionic compound used for electrolyte replenishment and total parenteral nutrition (TPN) therapy. Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, KDP, or monobasic potassium phosphate), KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion.

Chemical structure of Monopotassium phosphate
Mechanism
Curator reviewed
Primary indication
Used in buffers (determination of pH, pharmaceutical production, urinary acidifier, paper processing, baking powder, and food), nutrient solutions, yeast foods, special liquid fertilizers, sonar systems and other electronic applications; Used as a nutritional supplement in...Curator reviewed · 4 structured indications
Formula / weight
H2KO4P · 136.0855 g/mol (avg)
First approval
Canada, 1998 · United States, 1979
Also known as
Monobasic potassium phosphate · Monopotassium dihydrogen monophosphate · Monopotassium dihydrogen orthophosphate · Monopotassium dihydrogen phosphate · Monopotassium monophosphate
Code names
E-340(I) · INS-340(I) · INS NO.340(I)
Brand names
  • Dextrose and Electrolyte No. 75
  • Ionosol-MB
  • Isolyte S
  • Isolyte S pH 7.4
  • Isoplate
  • K-phos
  • K-phos Neutral
  • K-phos No 2
  • Tis-U-sol

Resolves to

Clinical / RWD
Structure
InChIKeyGNSKLFRGEWLPPA-UHFFFAOYSA-MSMILES[K+].OP(O)([O-])=O

What you can answer from here — as of July 06, 2026

4Protein targetsEach mapped to UniProt, with action and pharmacological action
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669Drug interactionsStructured to mechanism, not free text
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10Clinical trialsPhase, status and sponsor resolved per trial
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4Structured indicationsCondition, population, route and combination as fields, not prose
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4ContraindicationsEach with its own population and attribute set
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158Marketed productsAcross 8 countries and 58 labellers
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8+ReferencesStructured and connected to the statements they support
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