DE642343C - Process for the production of durable solutions of p-aminobenzoyldiaethylaminoethanol - Google Patents
Process for the production of durable solutions of p-aminobenzoyldiaethylaminoethanolInfo
- Publication number
- DE642343C DE642343C DEH131042D DEH0131042D DE642343C DE 642343 C DE642343 C DE 642343C DE H131042 D DEH131042 D DE H131042D DE H0131042 D DEH0131042 D DE H0131042D DE 642343 C DE642343 C DE 642343C
- Authority
- DE
- Germany
- Prior art keywords
- solutions
- acid
- solution
- ampoule
- carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/16—Amides, e.g. hydroxamic acids
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Agronomy & Crop Science (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Verfahren zur Herstellung haltbarer Lösungen des p-Aminobenzoyldiäthylaminoäthanols Es ist bekannt, daß p-Aminob,enzoyldiäthylaminoäthanol als Lokalanästhetikum am vorteilhaftesten in blutisoalkalischer Lösung angewandt wird (PH - 7,2). Die gewöhnlichen Salze der Base reagieren aber sauer; das Hydrochlorid z. B. gibt in 29/oiger wäßriger Lösung etwa PH - 6. Setzt man einer solchen Lösung geeignete Mengen Alkali zu, so kann man sie blutisoalkalisch stellen. Bei dieser Reaktion aber ist der Aminöbenzoesäureester nicht beständig,- er wird vielmehr mit beträchtlicher Geschwindigkeit zum Alkamin und freier Aminobenzoesäure verseift. Durch diese wird- die Lösung sauer, -und hierdurch kommt die Zersetzung zum Stillstand, aber eben erst, nachdem die Lösung die therapeutisch wichtige Eigenschaft verloren bat, blutisoalkalisch zu sein.Process for the preparation of stable solutions of p-aminobenzoyldiethylaminoethanol It is known that p-aminob, enzoyldiäthylaminoäthanol as a local anesthetic am is best used in a blood-iso-alkaline solution (PH - 7.2). The common ones However, salts of the base react acidic; the hydrochloride e.g. B. gives in 29 / oiger aqueous Solution about PH - 6. If you add suitable amounts of alkali to such a solution, so you can make them blood-iso-alkaline. In this reaction, however, the amino benzoic acid ester is not permanent - rather, it becomes an alkamine with considerable speed and free aminobenzoic acid saponified. Through this, the solution becomes acidic, and thereby the decomposition comes to a standstill, but only after the solution has been therapeutically lost important property asked to be blood iso-alkaline.
Man kann blutisoalkalisch reagierende Lösungenherstellen, die scheinbar haltbar sind, d. h. deren Säurestufe sich während der Aufbewahrung nicht merklich ändert, indem man die Lösung mit Puffergemischen versetzt; dadurch wird aber die Verseifung des aasästhetisch wirkenden Esters n i den unwirksamen Komponenten nicht verhindert, sondern nur verdeckt, d. h. derartige Lösungen behalten zwar ihre Säurestufe bei, verlieren aber fortgesetzt an Wirkungswert.One can prepare blood-iso-alkaline solutions that appear to be are durable, d. H. the acidity of which does not noticeably change during storage changes by adding buffer mixtures to the solution; but this becomes the Saponification of the esthetically active ester is not in the ineffective components prevented, but only concealed, d. H. such solutions retain their acidity but continue to lose their effectiveness.
So ist z. B. bekannt, Lösungen des p-Aminobenzoyldiäthylaminoäthanols mit Hilfe von Kohlensäure herzustellen, denen zugleich schwach alkalische Reaktion und im Vergleich mit anderen Lösungen gute Stabilität, Verträglichkeit und kräftigere therapeutische Wirkung nachgerühmt werden. Wie in allen alkalisch reagierenden Lösungen wird aber in ihnen der wirksame Ester allmählich verseift, so daß seine Menge schließlich merklich vermindert ist.So is z. B. known solutions of p-Aminobenzoyldiäthylaminoäthanols to produce with the help of carbonic acid, which at the same time have a weakly alkaline reaction and in comparison with other solutions, good stability, compatibility and more powerful therapeutic effects are praised. As in all alkaline solutions but the active ester in them is gradually saponified, so that its quantity finally becomes is noticeably reduced.
Grundsätzlich verschieden hiervon ist der Gegenstand der vorliegenden Erfindung, die .es ermöglicht, die Lösungen in der Aufbewahrung schwach sauer zu halten, so daß jede Zersetzung des wirksamen Esters von vornherein vermieden wird, und sie trotzdem blutisoalkalisch, d. h. wirksam und. reizlos zur Anwendung zu bringen. Die nur schwach gepufferten Lösungen werden in der Ampulle durch reichliche Mengen freier Kohlensäure -sauer gehalten; beim öffnen der Ampullen, besonders aber beim Einsaugen in die Injektionsspritze, entweicht die Kohlensäure, und .die Lösungen werden alkalisch,. Die Kohlensäure kann entweder in die Lösungen beim Füllen -eingepreßt oder aber in der Lösung selbst aus Bicarbonat erzeugt werden, indem man entweder in die zu füllenden Ampullen eine geeignete Menge einer festen Säure einfüllt und die bicarbonathaltige Lösung aufgibt oder umgekehrt festes Carbonat und säurehaltig-- Lösung verwendet, so daß ein wesentlicher Teil der Kohlensäure erst nach dem Zuschmielzen der Ampulle frei wird.The subject matter of the present is fundamentally different from this Invention that makes it possible to keep the solutions slightly acidic hold so that any decomposition of the active ester is avoided from the outset, and they are still blood-iso-alkaline, d. H. effective and. to apply without irritation. The only weakly buffered solutions are in the ampoule by copious amounts free carbon dioxide - kept acidic; when opening the ampoules, but especially when Sucking into the injection syringe, the carbon dioxide escapes and the solutions become alkaline. The carbon dioxide can either be pressed into the solutions during filling or can be produced in the solution itself from bicarbonate by either a suitable amount of a solid acid is poured into the ampoules to be filled and the solution containing bicarbonate gives up or, conversely, solid carbonate and acidic - Solution used, so that a substantial part of the carbonic acid only becomes free after the ampoule has been melted shut.
Verwendet man als Säure für diesen Zweck;
2. In jede einzelne Ampulle wird eine Pastille von i 8 mg Bicarbonat gegeben, je 2 cm- der Lösung von 400 g p-Aminobenzoyldiäthylaminoäthanolhydri>chlorid, 36o cmü 2n-Salzsäure und 201 Wasser aufgefüllt und darauf die Ampulle rasch zugeschmolzen.2. A lozenge of 18 mg bicarbonate is placed in each individual ampoule, 2 cm of the solution of 400 g of p-aminobenzoyldiethylaminoethanolhydric chloride, 36o cmü of 2N hydrochloric acid and 201 water are added to each and the ampoule is then quickly melted shut.
3. In den Beispielen i und 2 kann die Salzsäure durch 1409 p-Aminobenzoesäure ersetzt werden.3. In Examples i and 2, the hydrochloric acid can be replaced by 1409 p-aminobenzoic acid be replaced.
4. In jede Ampulle kommen je eine Pastille von 18 mg Natriumbicarbonat und i4.mg p Aminobenzoesäure, dazu 2 cm3 einer Lösung von 4009 p-Aminobenzoyldiäthylamino-'äthanolhydrochlorid in 2o l Wasser.4. Each ampoule contains a lozenge of 18 mg sodium bicarbonate and i4.mg p aminobenzoic acid, plus 2 cm3 of a solution of 4009 p-aminobenzoyldiethylamino-ethanol hydrochloride in 2o l of water.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH131042D DE642343C (en) | 1932-03-15 | 1932-03-15 | Process for the production of durable solutions of p-aminobenzoyldiaethylaminoethanol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH131042D DE642343C (en) | 1932-03-15 | 1932-03-15 | Process for the production of durable solutions of p-aminobenzoyldiaethylaminoethanol |
Publications (1)
Publication Number | Publication Date |
---|---|
DE642343C true DE642343C (en) | 1937-03-01 |
Family
ID=7176267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH131042D Expired DE642343C (en) | 1932-03-15 | 1932-03-15 | Process for the production of durable solutions of p-aminobenzoyldiaethylaminoethanol |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE642343C (en) |
-
1932
- 1932-03-15 DE DEH131042D patent/DE642343C/en not_active Expired
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