PubChem
网页PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more.
Chemical structure - Wikipedia
网页A chemical structure of a molecule is a spatial arrangement of its atoms and their chemical bonds. Its determination includes a chemist 's specifying the molecular geometry and, when feasible and necessary, the electronic structure of …
ChemSpider: Search and Share Chemistry - Homepage
网页A free chemical structure database providing fast text and structure search access to over 130 million structures from hundreds of data sources.
MolView
网页2D to 3D: converts the structural formula into a 3D model. Left toolbar. Bonds: pick one of the bond types (single, double, triple, up, down) and add or modify bonds. Fragments: pick one of the fragments (benzene, cyclopropane, etc.) and add fragments. Chain: create a chain of carbon atoms.
Chemical Structure Search - Fisher Sci
网页Use this chemical structure search tool to search our chemical database for an exact or substructure match on your molecule of interest. You can also use this chemical structure tool to draw and modify standard organic chemical and organometallic structures.
Chemical Structure - Introduction, Types, Examples and …
网页What is a Chemical Structure? Chemical Structure is the spatial arrangement of atoms in a molecule. Chemical structure determines the molecular geometry of the molecule. Russian Chemist Alexander Butlerov acknowledged that molecules are not random clusters of atoms and functional groups but are arranged in a …
Structure Search - ChemSpider
网页Structure search. This page is currently under development! We are constantly updating ChemSpider and adding new features. In the meantime you can still access the functionality on the legacy website. Please come back and try this page again in a few days. Legacy.
Molecule | Definition, Examples, Structures, & Facts | Britannica
网页2024年9月13日 · Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance. Learn more about the properties and structures of molecules in this article.
1.12 Drawing Chemical Structures - Organic Chemistry - OpenStax
网页In the structures we’ve been drawing until now, a line between atoms has represented the two electrons in a covalent bond. Drawing every bond and every atom is tedious, however, so chemists have devised several shorthand ways for writing structures. In condensed structures, carbon–hydrogen and carbon–carbon single bonds aren’t shown ...
Online chemical structure editor - DrawChemistry
网页Online chemical structure editor. DrawChemistry — is an interface created with the help of professional chemists. The editor lets you create structural formula online and save it as either .mol or .png.
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