The OS rating of single mode fiber should have no bearing on your choice of transceivers.
Both OS1 and OS2 will work with the most popular single mode transceivers (most of which use wavelengths around 1310nm and 1550nm). This includes 1000Base-LX/LX10/EX/LH/ZX and it is the transceiver which larger determines the distance the signal will propagate, not the fiber.
The main difference in OS1 and OS2 is the construction of the cable, although OS2 may specify cable with a lower attenuation specification (depending on when and under which standards it was manufactured).