I think you mean SC/APC. It almost surely is single mode. OS2 should be fine. The other measurements probably don't matter as long as you get OS2 single mode with SC connectors with an APC polish on ...

I have some corning fiber optic cable that is run in my building that I am trying to get the exact specs on - ONFR means it is Optical fiber, non-conductive riser and is a type of indoor cabling ...