CAS number： 104344-23-2
Molecular formula： C22H35NO8
molecular weight： 441.52 g/mol
Chemical structure：
| Sr No. | Test | Specification | Result | |
| 1 | Characters i. Appearance ii. Solubility | White or almost white, slightly hygroscopic powder. | White , slightly hygroscopic Powder. | |
| Very soluble in water, freely soluble in methanol. | Conforms . | |||
| 2 | Identification | The IR abosorbtion spectrum should be concordant with that of Bisoprolol | Positive | |
| 3 | Related substance by HPLC (%) i. Impurity G ii. Impurity A iii. Impurity E iv. Unspecified impurity v. Total impurity | Not more than 0.5 Not more than 0.3 Not more than 0.2 Not more than 0.10 Not more than 0.5 Not more than 0.5 | BDL 0.27 BDL 0.07 0.4 0.2 | |
| 4 | Water By KF (%, w/w) | Not more than 0.5 | 0.2 | |
| 5 | Sulfated ash (%, w/w) | Not more than 0.1 | 0.04 | |
| 6 | Assay on anhydrous basis (%,w/w) | 99.0 to 101.0 | 99.89 | |
| 7 | Additional Test Residual solvent By GC-HS (ppm) i. Methanol ii. Methylene chloride iii. Acetone | Not more than 3000 Not more than 600 Not more than 5000 | 148 BDL 163 | |
