The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 2021
Filed:
Jan. 28, 2020
Applicant:
Apirx Pharmaceutical Usa, Llc, New York, NY (US);
Inventors:
Lekhram Changoer, Ridderkerk, NL;
Cornelis Herman Michel Van Der Loo, Groningen, NL;
Erik Keller, Adorp, NL;
Assignee:
APIRx Pharmaceutical USA, LLC, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61K 36/00 (2006.01); C07D 311/80 (2006.01); B01D 11/02 (2006.01);
U.S. Cl.
CPC ...
C07D 311/80 (2013.01); B01D 11/0288 (2013.01);
Abstract
Δ-THC carboxylic acid is extracted fromflowers using a first organic solvent, then separated using a second aqueous solvent. Δ-THC carboxylic acid is converted to Δ-THC carboxylic salt before being extracted by a third organic solvent and converted back to Δ-THC carboxylic acid. Using a solvent swap, Δ-THC carboxylic acid is decarboxylated and extracted again with an organic solvent prior to purification to give Δ-THC.