| Tests | Standards | Results |
| Appearance | White or almost white ,crystalline powder. | White,crystalline powder. |
| Identification | A:IR absorption | Complies |
| B:UV absorption | Complies | |
| C:TLC | Complies | |
| Melting point | 168~172°C | 169.0~170.9°C |
| Water | Not more than0.5% | 0.08% |
| Related substance | ImpurityJ(chloroacetanilide)not more than 10 ppm | 2ppm |
| Impurity K(4-aminophenol)not more than 50 ppm | 15 ppm | |
| Impurity F(4-nitrophenol)not more than 0.05% | Not detected | |
| any other impurity not more than 0.05% | 0.01% | |
| Total of other impurities not more than 0.1% | 0.02% | |
| Residue on ignition | Not more than 0.1% | 0.05% |
| Chloride | Not more than 0.014% | Less than 0.014% |
| Sulfate | Not more than 0.02% | Less than 0.02% |
| Sulfide | Conforms | Conforms |
| Heavy metals | Not more than 0.001% | Less than 0.001% |
| Free p-aminophenol | Not more than 0.005% | Less than 0.005% |
| Limit of P-chloroacetanilide | Not more than 0.001% | Less than 0.001% |
| Readily carbonizable substances | Conforms | Conforms |
| Residual solvents | Residual content of acetic acid is limited by the test of loss on dryingnot more than0.5% | 0.08% |
| Assay(anhydrous basis) | 99.0~101.0% | 99.6% |
| Conclusion: Complies with USP34/ BP2011 | ||
| Product Name | CAS No. | Molecular Formula |
| Acetaminophen/Paracetamol | 103-90-2 | Analgesics |
| Acetylsalicylic acid/Aspirin | 50-78-2 | Analgesics |
| Chlorogenic acid | 327-97-9 | Analgesics |
| Salicylamide | 65-45-2 | Analgesics |
| Antipyrine | 60-80-0 | Analgesics |
| Diclofenac sodium | 15307-79-6 | Analgesics |
| Ibuprofen | 15687-27-1 | Anti-inflammation |
| Ketoprofen | 22071-15-4 | Anti-inflammation |
| Flurbiprofen | 5104-49-4 | Anti-inflammation |
| (S)-Flurbiprofen | 51543-39-6 | Anti-inflammation |
| Naproxen | 22204-53-1 | Anti-inflammation |
| Naproxen Sodium | 26159-34-2 | Anti-inflammation |
| Celecoxib | 169590-42-5 | Anti-inflammation |
| Etoricoxib | 202409-33-4 | Anti-inflammation |
| Piroxicam | 36322-90-4 | Anti-inflammation |
| Nimesulide | 51803-78-2 | Anti-inflammation |
| Meloxicam | 71125-38-7 | Anti-inflammation |