US4017502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying the mixed ester, ethylene glycol 1-(2-p-chlorophenoxy)-2-methylpropionate nicotinate
Assignee: Alter SA
•
Filing: 1975-08-04
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Granted: 1977-04-12
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Expires: 1995-08-04
Abstract
Abstract The present invention is concerned with purifying the mixed ester, ethylene glycol 1-/2-(p-chlorophenoxy)-2-methylpropionate/-2-nicotinate by passing said compound in oily form through a layer of Super-Cel and charcoal and then crystallizing said compound from a mixture of benzene/petroleum ether. This compound has hypolipidemic properties.
Inventors
- 👤 Carlos Sunkel Letelier
- 👤 Fernando CilleroGrafulla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:03
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A process for purifying the mixed ester, ethylene glycol 1-[2-(p-chlorophenoxy)-2-methylpropionate]-2-nicotinate, which process comprises passing said ethylene glycol 1-[2-(p-chlorophenoxy)-2-methylpropionate]-2-nicotinate prepared in oily form with the temperature maintained at 60° C. through a layer of Super-Cel and charcoal, to prepare the same compound in solid form, which is then recrystallized from benzene/petroleum ether.
Claim 2
Dependent Claim
51 words
A process for purifying the mixed ester, ethylene glycol 1-[2-(p-chlorophenoxy)-2-methylpropionate]-2-nicotinate, which process comprises passing said ethylene glycol 1-[2-(p-chlorophenoxy)-2-methylpropionate]-2-nicotinate prepared in oily form with the temperature maintained at 60° C. through a layer of Super-Cel and charcoal, to prepare the same compound in solid form, which is then recrystallized from benzene/petroleum ether.
References Cited (Backward Citations)
US3622587A
Cited
US3723446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |