| Captopril | USP29 |
| Appearance | White crystalline powder |
| Specific Rotation | -132° |
| Melting Range | 107ºC to 108ºC |
| Loss in Drying | 0.06% |
| Residue on Ignition | 0.03% |
| Heavy Metals | ≤0.003% |
| Organic Volatile Impurities | Meets the requirements |
| Assay | 99.4% |
1. Applied in food field, it is mainly used as food additives for colorant and health care.
2.Applied in cosmetic field, it is mainly used to whitening, anti-wrinkle and UV protection.