Iodine (131I) norcholesterol

DB13487InvestigationalSmall molecule

Iodine (131I) norcholesterol is a radioiodine-labeled cholesterol analogue that accumulates in areas where steroid hormones are produced and is used in certain diagnostic procedures. A special type of injectable dye used to help diagnose certain conditions.

Formula / weight: C₂₇H₄₅IO · 516.562 g/mol (avg)
Code names: NP-59 · NP-59 I-131

Resolves to

Compound

UNIIHFE9M7UF0LCAS56897-09-7ChEMBLCHEMBL2106905ChEBI34893KEGGC13547

Clinical / RWD

ATCV09XA01

Structure

InChIKeyQJHZPCLORSPENH-DRTKWHMQSA-NSMILESCC(C)CCC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3C[C@@H](C[131I])C4=C(CC[C@H](O)C4)[C@H]3CC[C@]12C

Transporters

Q9Y6L6SLCO1B1Q9UNQ0ABCG2Q9NPD5SLCO1B3P33527ABCC1

What you can answer from here — as of July 07, 2026

4TransportersSubstrate / inhibitor direction, not just membership

Listed above

1Clinical trialPhase, status and sponsor resolved per trial

1Structured indicationCondition, population, route and combination as fields, not prose

4ContraindicationsEach with its own population and attribute set

1Marketed productAcross 1 country and 1 labeller

1ATC codeIncluding every combination product, plus 12 drug categories

5+ReferencesStructured and connected to the statements they support

Which other approved drugs treat the same conditions as Iodine (131I) norcholesterol, and which companies have late-stage candidates in those indications?

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