We have problem in formulas of paracetamol vials, it is becom yellow color after preparation

Stability
1

We have problem in formulas of paracetamol vials, it is becom yellow color after preparation

2

Please provide a summary of the manufacturing process.
Is this injection product terminally sterilized by dry heat sterilization?
Is the product become yellow before sterilization or after sterilization?

3

Please mention your manufacturing process as we also manufacture paracetamol inj. 100mL vial and sterile it by moist heat sterilization process.