Extracting particular data from the column

I have a dataframe that has 10 columns, and I want to extract a particular string from one column and store it in another column.

The column looks like:-

BY INST 751569 : MICR CLG (CTS)
BY INST 4692 : MICR CLG (CTS)
IMPS/P2A/108711200632/XXXXXXXXXX2155/sector103
REJECT:187002:FUNDS INSUFFICIENT
NEFT-CITIN21233180661-VISHAL

I want to extract the following into another column

751569
4692
108711200632
187002
CITIN21233180661

How it can be done?

Hi,
I would look at the Pandas docs.