CAS number： 117704-25-3
Molecular formula： C50H74O14
molecular weight： 899.1142
Chemical structure：
| Products Name | Doramectin | |
| Shelf life | 2 years | |
| test | specification | result |
| Appearance | White crystalline powder | white crystalline powder |
| Identification A: IR | the iR spectrum of the reference standard | conform |
| Appearance of solution | The Solution is clear and not more intensely colored than reference solution Ny6 | comform |
| water | NMT3.0% | conforms |
| Heavy metals | NMT 20 ppm | <20ppm< td=""> |
| sulfated ash | NMT 0.1% | 0.01% |
| BHT | NMT 2000ppm | 544pp |
| Avermectin Bla | NMT 1.5% | 0.66% |
| Avermectin Blb | NMT 1.0% | 0.33% |
| Avermectin Bla and Avermectin Blb | NMt 2.0% | 0.99% |
| total impurities | NMT 5.0% | 2.6% |
| Residual solvents | NMT 5000ppm | 37ppm |
| Assay | NMT 30000ppm | 43ppm |
| Acetone | NLT 95.0% | 97% |
