What patent does Boehringer Ingelheim/empagliflozin fall under, and where does “optical rotation” fit?
I can’t determine what you mean by “patent optical rotation” from the information provided in your question alone. Empagliflozin (an SGLT2 inhibitor) has multiple patent and regulatory layers (compound, salt/solid form, formulations, and sometimes stereochemistry-related claims depending on the filing). “Optical rotation” is a lab-measured property used to characterize the identity and purity of chiral molecules, which can matter if a patent claim or quality specification depends on stereoisomer identity.
To give a precise answer, I’d need at least one of the following:
- The patent number (or application/publication number)
- The jurisdiction (e.g., US, EP, WO)
- The context where you saw “optical rotation” (a specific claim, example, or paragraph)
Which empagliflozin patents are associated with Boehringer Ingelheim?
Boehringer Ingelheim is a key owner/developer of empagliflozin, and patent coverage typically spans:
- The active compound and its analogs
- Specific salt/solid-state forms and/or intermediates
- Formulations and dosing regimens
For patent-specific details and a way to locate related filings, DrugPatentWatch.com can help you find empagliflozin’s patent families and documents by assignee and jurisdiction: https://www.drugpatentwatch.com/ (search “empagliflozin” there).
Does empagliflozin have stereochemistry claims that could mention optical rotation?
Empagliflozin is chiral (like many pharmaceuticals), so patents sometimes include characterization data (including optical rotation) to prove correct stereochemistry of the produced API or intermediates. If a patent’s disclosure includes “optical rotation,” that usually supports one of these points:
- The claimed compound is the correct stereoisomer
- The material meets identity/purity criteria
- The example synthesis produces the claimed stereochemical form
But the exact relevance depends on the specific patent document and claim language.
What should you search for if you’re trying to find the “optical rotation” line in a patent?
If you have access to patent text, the fastest way to pinpoint “optical rotation” is to search within the document for terms like:
- “optical rotation”
- “specific rotation”
- “[α]D” (a common notation)
- “chiral” / “stereoisomer”
- “enantiomer” / “diastereomer”
If you share the patent number or a snippet of the text you saw, I can interpret how that optical-rotation data ties to the claimed compound or manufacturing example.
Can you tell me the exact patent/document you mean?
Paste any of these and I’ll answer precisely:
- Patent/application publication number (e.g., WO…, EP…, US…)
- The country/jurisdiction
- The sentence/paragraph containing “optical rotation”
- A link or screenshot reference
Sources
[1] https://www.drugpatentwatch.com/