Product Brief Introduction
Product name:(S)-Timolol maleate
CAS:26921-17-5
MF:C17H28N4O7S
MW432.492
Product Specification
|
Item |
Specification |
|
Appearance |
White or off-white crystalline powder or colorless crystals |
|
Identification |
IR: The infrared absorption spectrum of the sample complies with the reference standard. |
|
Solubility |
Soluble in water and in ethanol(96%). |
|
Appearance of Solution |
The solution is clear and not more intensely coloured than reference solution B8. |
|
Specific Rotation |
-6.2°~ -5.7° |
|
Melting Point |
199.0℃-203.0℃ |
|
PH |
3.8-4.3 |
|
Loss on Drying |
≤ 0.5% |
|
Residue on Ignition |
≤ 0.1% |
|
Related Substances
|
Impurity B ≤ 0.2% |
|
Impurity C ≤ 0.2% |
|
|
Impurity D ≤ 0.2% |
|
|
Impurity E ≤ 0.2% |
|
|
Impurity F ≤ 0.2% |
|
|
Single unspecified impurity ≤ 0.1% |
|
|
Total impurities ≤ 0.4% |
|
|
R-isomer content |
≤ 1.0% |
|
Assay (on dried basis) |
98.5%-101.0% |
