Tracers / [18F]FPIA

[18F]FPIA

Also written as 18F-pivalate; [18F]Fluoropivalate; [18F]fluoropivalic acid; [18F]FPIA; [18F]RAD101; [F-18]Fluoropivalate; [F-18]FPIA
Radionuclide
F-18 t½ 109.7 min
Modality
PET
Production route
Cyclotron liquid target
Stage
Clinical research
Syntheses indexed
4

What it is

Compound class
Short-chain fatty acid
Target / mechanism
Short-chain fatty acid uptake and metabolism PMID 32123971 / DOI 10.1007/s00259-020-04724-y
Clinical application
Oncology imaging, particularly brain tumours (glioma) and brain metastases PMID 37490079; PMID 32123971 / DOI 10.1007/s00259-020-04724-y
Theranostic pair

Regulatory status

FDA
No Drugs@FDA / openFDA drug registry — no approved application found; search: https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=BasicSearch.process&searchTerm=fluoropivalate
EMA (centralised)
Other approvals
Brand names

Clinical use

Typical injected activity
Uptake time

Reported in the literature. Not a dosing recommendation.

Published syntheses

ModuleCassettePurificationYield %RCP %Precursor / supplierSource
FASTlab
GE HealthCare
vendor cassetteSPE30.3 ± 2.3%
no
> 98%methyl 2,2-dimethyl-3-(tosyloxy)propanoate41863729
2026 EJNMMI Radiopharm Chem
Automated second-generation radiosynthesis of [18F]FPIA on the GE FASTLab™ platform — Non-decay-corrected radiochemical yields (RCY, n.d.c) were 30.3 ± 2.3% (n = 8) and 25.8 ± 6.6% (n = 46) on GE FASTlab™ and Trasis AIO™, respectively.
AllinOne (AiO)
Trasis
vendor cassetteSPE25.8 ± 6.6%
no
99.7 ± 0.3%methyl 2,2-dimethyl-3-(tosyloxy)propanoate41863729
2026 EJNMMI Radiopharm Chem
Automated second-generation radiosynthesis of [18F]FPIA on the Trasis AIO™ platform — Non-decay-corrected radiochemical yields (RCY, n.d.c) were 30.3 ± 2.3% (n = 8) and 25.8 ± 6.6% (n = 46) on GE FASTlab™ and Trasis AIO™, respectively.
25.4 ± 3.8%>99%41616584
2026 Nucl Med Biol
an optimized two-step, one-pot synthesis of [18F]FPIA using a vial-based automated synthesizer — 25.4 ± 3.8% (n = 9) activity yield at end of synthesis (EOS)
37 ± 9%> 99%41616584
2026 Nucl Med Biol
an optimized two-step, one-pot synthesis of [18F]FPIA using a vial-based automated synthesizer — the scale-up synthesis was successful with a 37 ± 9% (n = 37) activity yield at EOS

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Quality control Preliminary — inferred from compound class

Ph. Eur. monograph
USP monograph
AppearancepHRCP HPLCRCP TLCHPLC cond.Radionuclidic (HPGe)Half-lifeActivityEndotoxins (LAL)SterilityFilter integrity
How this set was arrived at. base set per Ph. Eur. general monograph 0125 (rule); organic-phase radiosynthesis assumed from isotope/compound class, no synthesis data confirming it -> GC residual solvents (preliminary); conventional nucleophilic 18F-fluorination assumed from isotope/compound class, no synthesis data confirming K222 use -> Kryptofix test (preliminary); STAGE 17.4 recheck by compound class ('Short-chain fatty acid'): HPLC UV -> HPLC cond. (aliphatic fatty acid, no aromatic ring -- weak UV chromophore, same category as acetate/citrate)

Tests listed by reference only. Monograph texts are copyrighted and are not reproduced here. How these are derived

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