## chem.check_missing_stereochemistry()


Check stereochemistry.


Usage

``` python
chem.check_missing_stereochemistry(
    smiles,
    use_legacy=False,
)
```


## Parameters


`smiles: str`  
SMILES.

`use_legacy: bool = ``False`  
False. Default is False.


## Returns


`bool | None`  
None\] flag.