Are there any substitutes for oyster liquor?

I'm making a chowder that calls for oyster liquor. Are there any bottled substitutes I might have in the pantry?

Oyster liquor is the liquid that is naturally inside the oyster shell. Bottled clam juice, bottled seafood broth, or equal parts chicken broth and water can be used instead. Just be aware that the saltiness can vary, and you may need to omit salt called for elsewhere in the recipe.