Molar Optical Rotatory Power
The "Molar Optical Rotatory Power" Angle of optical rotation divided by the optical path length through the medium and by the amount concentration giving the molar optical rotatory power.
Applicable units are those of quantitykind:MolarOpticalRotatoryPower
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https://cdd.iec.ch/cdd/iec61987/iec61987.nsf/ListsOfUnitsAllVersions/0112-2---62720%23UAD126
The "Molar Optical Rotatory Power" Angle of optical rotation divided by the optical path length through the medium and by the amount concentration giving the molar optical rotatory power.
$\alpha_n = \alpha \frac{A}{n}$, where $\alpha$ is the angle of optical rotation, and $n$ is the amount of substance of the optically active component in the path of a linearly polarized light beam of cross sectional area $A$.
http://www.iso.org/iso/catalogue_detail?csnumber=31894