| ∫PhCOPh: | integration of the benzophenone protons; |
| ∫amine: | integration of the protons of the amine functions; |
| Hamine: | number of protons of the amine functions; |
| HPhCOPh: | number of protons of the benzophenone; |
| mamine: | weight of the amine product; |
| mPhCOPh: | weight of benzophenone; |
| MPhCOPh: | molecular weight of benzophenone. |