I think it is commercially available. You can buy from here https://www.thermofisher.com/au/en/home/technical-resources/cell-lines/h/cell-lines-detail-347.html
Alternatively, you can borrow it from your colleagues and start growing the cells if its available with them.
You can purchased it from some company such as ThermoFisher as Md Nazmul Islam suggested or you can borrow some aliquots from another lab and have your own stock.