CAS SciFindern includes reference, reaction, substance results, step-by-step procedures and protocols, citation mapping, biosequence searching, retrosynthetic analysis, touch-screen enabled structure drawing and much more. Access requires a personal account:
Materials Science & EngineeringThis link opens in a new windowOffers coverage of metallurgy, ceramics, polymers and composites used in engineering applications. This database includes the renowned METADEX, Copper and Polymer Library databases.
PubChem mostly contains small molecules, but also larger molecules such as nucleotides, carbohydrates, etc. Info on structures, identifiers, chemical and physical properties, biological activities, health, safety, toxicity, and others.