| CHEM009192 | Neodymium neodecanoate CAS106726-11-8 | Nd monoisotopic mass141.908 Avg mass144.242 | | |
| CHEM014884 | Lanthanum CAS7439-91-0 | La monoisotopic mass138.906 Avg mass138.906 | | |
| CHEM014892 | Cerium CAS7440-45-1 | Ce monoisotopic mass139.905 Avg mass140.116 | | |
| CHEM025370 | Europium CAS7440-53-1 | Eu monoisotopic mass152.921 Avg mass151.964 | | |
| CHEM025372 | Lutetium CAS7439-94-3 | Lu monoisotopic mass174.941 Avg mass174.967 | | |
| CHEM025373 | Samarium CAS7440-19-9 | Sm monoisotopic mass151.920 Avg mass150.360 | | |
| CHEM025375 | Ytterbium CAS7440-64-4 | Yb monoisotopic mass173.939 Avg mass173.040 | | |
| CHEM041695 | Praseodymium CAS7440-10-0 | Pr monoisotopic mass140.908 Avg mass140.908 | | |
| CHEM041696 | Gadolinium CAS7440-54-2 | Gd monoisotopic mass157.924 Avg mass157.250 | | |
| CHEM041697 | Terbium CAS7440-27-9 | Tb monoisotopic mass158.925 Avg mass158.925 | | |
| CHEM041698 | Dysprosium CAS7429-91-6 | Dy monoisotopic mass163.929 Avg mass162.500 | | |
| CHEM041699 | Holmium CAS7440-60-0 | Ho monoisotopic mass164.930 Avg mass164.930 | | |
| CHEM041700 | Erbium CAS7440-52-0 | Er monoisotopic mass165.930 Avg mass167.259 | | |
| CHEM041701 | Thulium CAS7440-30-4 | Tm monoisotopic mass168.934 Avg mass168.934 | | |
| CHEM106925 | Promethium CASNot Available | Pm monoisotopic massNot Available Avg massNot Available | | |
| CHEM131760 | Samarium Sm-153 CAS15766-00-4 | Sm monoisotopic mass152.922 Avg mass152.922 | | |
| CHEM132039 | Lutetium Lu-177 CAS14265-75-9 | Lu monoisotopic mass176.944 Avg mass176.944 | | |
| CHEM132389 | Gadolinium cation (3+) CAS22541-19-1 | Gd monoisotopic mass157.924 Avg mass157.250 | | |
| CHEM132390 | Lanthanum III cation CAS16096-89-2 | La monoisotopic mass138.906 Avg mass138.906 | | |
| CHEM141676 | Cerous cation CAS18923-26-7 | Ce monoisotopic mass139.904 Avg mass140.114 | | |