| Catalogue Number: | L-4462 | 
| Compound Name: | Linagliptin Impurity 49 | 
| Synonyms: | (R)-2-((1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamoyl)benzoic acid | 
| CAS#: | 2074688-81-4 | 
| Alternate CAS#: | |
| Molecular Formula: | C33H32N8O5 | 
| Molecular Weight: | 620.67 | 
Linagliptin Impurity 97 Trifluoroacetate (Mixture of Isomers)
C33H39F3N8O9. C2HF3O2
M.W. 634.70 114.02