Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

96 results about "Chlorobutanol" patented technology

Chlorobutanol (trichloro-2-methyl-2-propanol) is a preservative, sedative, hypnotic and weak local anesthetic similar in nature to chloral hydrate. It has antibacterial and antifungal properties. Chlorobutanol is typically used at a concentration of 0.5% where it lends long term stability to multi-ingredient formulations. However, it retains antimicrobial activity at 0.05% in water. Chlorobutanol has been used in anesthesia and euthanasia of invertebrates and fishes. It is a white, volatile solid with a menthol-like odor.

Preparation for Iontophoresis

A preparation used for iontophoresis in order to absorb a physiologically active substance via the skin or mucosa using electrical driving force and the preparation containing a local anesthetic, epinephrine or its salt, water and chlorobutanol.
Owner:TEIKOKU SEIYAKU KK TEIKOKU SEIYAKU CO LTD

Synthesis method of high-purity 1,4-butane sultone

ActiveCN109293625AImprove the mixing effectShorten the sulfonation reaction timeOrganic chemistrySynthesis methodsFiltration
The invention discloses a synthesis method of high-purity 1,4-butane sultone. The synthesis method comprises the steps: 1, adding 4-chlorobutanol and a sodium sulfite solution into an alcohol solvent,raising the temperature until carrying out reflowing for 6 h, ending the reflowing to obtain a mixed solution A, concentrating the mixed solution A to recover the alcohol solvent, then, adding hydrochloric acid for acidification, carrying out concentration until a material becomes viscous, then, adding the alcohol solvent, separating out a sodium chloride crystal, carrying out filtration, and concentrating filtrate to recover the alcohol solvent so as to obtain 4-hydroxybutane sulfonic acid; 2, carrying out continuous flash evaporation dehydration on 4-hydroxybutane sulfonic acid at the vacuum degree of 1-8 mmHg and the temperature of 130-165 DEG C to obtain industrial-grade 1,4-butane sultone; and 3, adding an azeotrope into industrial-grade 1,4-butane sultone, carrying out normal-pressure fractional distillation to recover the azeotrope, then, carrying out reduced-pressure fractional distillation at the vacuum degree of 2-4 mmHg, and collecting fractions with the temperature of 120-121 DEG C to obtain high-purity 1,4-butane sultone. The method is simple and environment-friendly, the sulfonation yield is greatly increased, and the purity and yield of 1,4-butane sultone are greatly increased.
Owner:JINGCHU UNIV OF TECH

Preparation method of oxytocin injection

The invention provides a preparation method of an oxytocin injection. According to the preparation method of the oxytocin injection, through control over the temperature in the preparation process anda nitrogen introduction mode and accurate adjustment for the pH value, chlorbutol in the injection is more stable and cannot be easily subjected to oxydative degradation and volatilized, and the oxytocin injection well corresponding to the labelled amount on a prescription is obtained and has practical application and popularization value.
Owner:CHENGDU HAITONG PHARMA

Tumor targeting haematoporphyrin injection for ultrasonic therapy and preparation method thereof

The invention discloses a tumor targeting haematoporphyrin injection for ultrasonic therapy and a preparation method thereof. The preparation method comprises the following steps of firstly, enabling folate and aminocyclodextrin to react to generate folate-conjugated cyclodextrin; enabling the folate-conjugated cyclodextrin and haematoporphyrin to react, so as to obtain a folate-conjugated cyclodextrin haematoporphyrin inclusion compound; finally, adding the folate-conjugated cyclodextrin haematoporphyrin inclusion compound and acetone chloroform into injection water, and sterilizing, so as to obtain the tumor targeting haematoporphyrin injection for the ultrasonic therapy. The tumor targeting haematoporphyrin injection for ultrasonic therapy has the advantages that after the tumor targeting haematoporphyrin injection is injected into a tumor-bearing mice body, the in-vitro ultrasonic therapy is adopted, so that the targeting property of the haematoporphyrin for high expression ofexpressing the malicious tumor tissues in a folate receptor is obviously improved, the retention time of the drug in the tumor part is prolonged, and the tumor therapy effect is improved; the light stability of the haematoporphyrin is improved, the photosensitive toxic and side reaction of light sensitizing of the haematoporphyrin is decreased, and the wide application potential is realized in clinical application.
Owner:NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products