I'm in search of where and how (if possible) I can do an emergency withdrawal on Uniswap V3.
In other pools I've seen, you can do so by finding the Masterchef contract (pancake example), entering the blockchain explorer i.e. polygonscan, ethscan, or bscscan and writing to the emergency withdraw function.
Can anyone tell me if: Uniswap v3 has a masterchef contract, and if emergency withdraws are possible from their liquidity pool protocols?
You can withdraw your liquidity from Uniswap v3 at any time. This includes times when it is an emergency or when it is not an emergency.
Uniswap offers multiple frontends, hosted or one that you can spin up from source code yourself. Also all smart contract are always accessible through various other methods, including Etherscan, Javascript, and so on.