2026 has been a concentrated year for peptide therapeutics. Efficacy reached a new high in late-stage trials, the obesity field moved beyond the incretins to amylin, the oral route reached weight management, and peptide-guided radioligand therapy kept advancing — each point tied to a specific 2025–2026 result.

Toxic

Harmful

Health Hazard

Environmental Hazard

Danger

H301Toxic if swallowed

H317May cause an allergic skin reaction

H341Suspected of causing genetic defects

H400Very toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

Customs Tariff Classification

The international HS code for Romidepsin (CAS 128517-07-7) is 2934.99.

HS code (international, 6-digit)

2934.99

EU CN code (8-digit)

2934 99 90

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers

IUPAC Name

(1S,4S,7Z,10S,16E,21R)-7-ethylidene-4,21-di(propan-2-yl)-2-oxa-12,13-dithia-5,8,20,23-tetrazabicyclo[8.7.6]tricos-16-ene-3,6,9,19,22-pentone

InChIKey

OHRURASPPZQGQM-GCCNXGTGSA-N

SMILES

C/C=C\1/C(=O)N[C@H](C(=O)O[C@H]\2CC(=O)N[C@@H](C(=O)N[C@H](CSSCC/C=C2)C(=O)N1)C(C)C)C(C)C

Synonyms (29)

Romidepsin (JAN/USAN/INN)
Antibiotic FR 901228
Chromadax
Depsipeptide
Istodax
Istodax (TN)
ROMIDEPSIN [MART.]
Romidepsin
Romidepsin - Bio-X trade mark
Romidepsin, >=98% (HPLC)
RomidepsinFK-228?
romidepsina
romidepsine
romidepsinum

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Romidepsin

Related Compounds

Related Reading

Safety Reference

Customs Tariff Classification