US Patent

US11590246 — Complex of gadolinium and a chelating ligand derived from a diastereoisomerically enriched PCTA and preparation and purification process

Formulation · Assigned to Guerbet SA · Expires 2040-01-17 · 14y remaining

Vulnerability score 50/100 Moderate — design-around opportunities exist

What this patent protects

This patent protects a complex of gadolinium and a chelating ligand derived from a diastereoisomerically enriched PCTA, along with its preparation and purification process.

USPTO Abstract

The present invention relates to a complex of formula (II) constituted of at least 90% of a diastereoisomeric excess comprising a mixture of isomers II-RRR and II-SSS of formulae:The present invention also relates to a process for preparing and purifying said complex of formula (II), and also to a composition comprising said complex.

Drugs covered by this patent

Patent Metadata

Patent number
US11590246
Jurisdiction
US
Classification
Formulation
Expires
2040-01-17
Drug substance claim
No
Drug product claim
Yes
Assignee
Guerbet SA
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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