# InChI¶

The International Chemical Identifier (InChI) of a material is derived mainly from the Chemical Formula, Atom Connections, Hydrogen Atoms, Charge, Stereochemistry, and Isotope information for a non-periodic chemical structure.123

## Notation¶

### Examples¶

#### Methane (CH4)4¶

InChI=1S/CH4/h1H4

 1 2 3 4 5  H 0.5288 0.1610 0.9359 C 0.0000 0.0000 0.0000 H 0.2051 0.8240 -0.6786 H 0.3345 -0.9314 -0.4496 H -1.0685 -0.0537 0.1921 

#### Water (H2O)5¶

InChI=1S/H2O/h1H2

 1 2 3 H 0.7493682 0.0000000 0.4424329 O 0.0000000 0.0000000 -0.1653507 H -0.7493682 0.0000000 0.4424329 

## Schema¶

The JSON schema and an example representation for this property can be found here.