Search on STN International

STN Searching 💻📚🔍

STN stands for Scientific and Technical Information Network International and is jointly operated by Chemical Abstracts Service (CAS) and FIZ Karlsruhe. 🧪🌐 STN offers access to 100+ scientific and technical information databases on one integrated platform, with a total of over 1.6 billion records. 🗂️📊

Through STN, information contained in individual databases such as CAPlus, DGENE, BIOSIS, and EMBASE can be searched. 🔍📄

STN database clusters group together similar databases. For example, CASLINK is a cluster that includes information from CAPlus, Registry, and MARPAT. So, a single search on CASLINK retrieves scientific information from all three databases. 🔗📘🧩

Mark IP's search specialists have over 10 years of experience in retrieving precise scientific data from STN International. 🧠💡 They effectively handle complex searches such as chemical structure search, Markush structure search, protein sequence search, and nucleotide sequence search using STN. 🧬🧪🧩

They conduct searches within specific STN databases or clusters, depending on project requirements. 🎯📂

📘 Some of the databases Mark IP regularly consults for scientific and patent searches on STN International include: 

ALLBIB, CAPlus, CAS Registry, Marpat, CASLINK, RAPRA, DGENE, PCTGEN, USGENE, BLAST, MEDLINE, and EMBASE. Additional specialized databases include WPIDS, CHEMISTRY, STRUCTURE, REAXYSFILE, REACTION, CASRNS, POLYMERS, MATERIALS, METALS, FUELS, PETROLEUM, and CHEMENG. Mark IP also utilizes subject-specific files such as WPINDEX, AGRICULTURE, FOOD, BIOSCIENCE, HEALTH, MEDICINE, DRUGU, FORMULATIONS, PHARMACOLOGY, TOXICOLOGY, SAFETY, and BIOSIS. 📚 

Some of the unique functions of STN include:

• 🔁 Continuous search history across databases
  Answer set numbers are preserved when switching between databases, allowing flexible cross-file and multi-file searching.

• 🗂️ Unified access to key databases
  CAplus, REGISTRY, and Derwent World Patent Index are integrated into a single system with multi-file search capability.

• ✂️ Multiple truncation symbols
  Enhances the flexibility and power of keyword-based searches.

• 🔤 Automatic plural and abbreviation detection
  Streamlines search inputs by expanding search terms intelligently.

• 🧩 Implied proximity for phrases
  Automatically applies proximity logic when searching phrases, improving result relevance.

• 📊 Post-processing tools for analysis
  Generate tables and reports with patent graphics, substance data, numerical values, and other critical fields.