Online Database of Chemicals from Around the World

Chemistry Software and Tools

CAS Registy Number validation

Examine the validity of CAS registry numbers; reveal the listing status of each valid CAS in chemBlink's database.

Molecular Weight Calculation

Calculate the molecular weight, the atomic weight distribution and percentage of each element based on the molecular formula.
Globally Harmonized System of Classification and Labeling of Chemicals (GHS)
GHS hazard pictograms
GHS hazard statements
GHS precautionary statements

Chemical Vocabulary Translation

Translate English name of chemicals into Chinese with an online artificial intelligence translator.

Crystal and Electronic Structure Analysis

A structure generator creates and manipulates 3D molecular and crystal structures. Further calculations provide the electronic structures such as molecular and crystal orbitals, energy levels and bands, density of states as well as Fermi surface in terms of numerical analysis and graphic presentation.

Periodic Table of Elements

Display a modern Periodic Table of Elements with multiple parameters and information resources.

Abbreviations Used in Organic Chemistry

List abbreviations frequently used in organic chemistry, including abbreviations of functional groups, chemical compounds and amino acids.

Organic Ring Index

Some most important parent rings are listed according to the ring size, the number and position of heteroatoms.

IUPAC Compendium of Chemical Terminology

It is a book published by IUPAC containing internationally accepted definitions for terms in chemistry. Work on the first edition was initiated by Victor Gold, hence its informal name, the Gold Book.