Tracers / [18F]SMBT-1

[18F]SMBT-1

Also written as [18F]SMBT-1; [F-18]SMBT-1; F-18 SMBT-1; SMBT-1
Radionuclide
F-18 t½ 109.77 min
Modality
PET
Production route
Stage
Syntheses indexed
1

What it is

Compound class
quinoline-based tosylate precursor derivative (THK-5475 scaffold)
Target / mechanism
Reactive astrogliosis / astrocyte imaging marker PMID 41437980
Clinical application
PET imaging of reactive astrocytes in Parkinson's disease PMID 41437980
Theranostic pair

Regulatory status

FDA
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
Synthra RNplus
Synthra
HPLC+SPE36.56 ± 11.55%
yes
>95%THK-5475 tosylate precursor
Hebei Sundia MediTech, China
41437980
2025 Front Nucl Med
Automated synthesis of [18F]SMBT-1 was performed using the Synthra RNplus synthesizer module (Synthra GmbH, Germany). — [18F]SMBT-1 was obtained with an average decay-corrected radiochemical yield of 36.56 ± 11.55% and molar activity as 396 Gbq/μmol at the end of synthesis (n = 7).

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Quality control Preliminary — inferred from compound class

Ph. Eur. monograph
USP monograph
AppearancepHRCP HPLCRCP TLCHPLC UVRadionuclidic (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)

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

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Notes

Added from reverse module search (stage 6); 3 article(s) with F-18. Compound class inferred from precursor name (not stated outright) -- PMID 41437980: '2.0 mg of the tosylate precursor,(S)-(2-methylpyrid-5-yl)-6-{[2-(tetrahydro-2H-pyran-2-yloxy)-3-tosyloxy] propoxy}quinoline (THK-5475, Hebei Sundia MediTech, China)'.