What is this pill V on one side and 58 98 on otherside white an oval?

Pill imprint 58 98 V has been identified as Sulfamethoxazole and trimethoprim DS 800 mg / 160 mg.

Sulfamethoxazole/trimethoprim is used in the treatment of urinary tract infection; bacterial skin infection; acne; bacterial infection; bronchitis (and more), and belongs to the drug classes miscellaneous antibiotics, sulfonamides. Risk cannot be ruled out during pregnancy.

Sulfamethoxazole/trimethoprim 800 mg / 160 mg is not subject to the Controlled Substances Act.

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https://www.drugs.com/imprints/58-98-v-13590.html