validation of unit of measure

[schmin1]

Is there a tool or service available to check whether a unit_code I have created follows the Unit of Measure specifications? For example: I use a unit of measure "nanomoles per minute per deciliter" which is not in the 260+ unit of measure list. I would like to validate that a unit_code of "nmol/min/dl" is correct. This is a relatively simple example but I may have more complex units in the future which require the use of [],{} or complex combinations of units.