CAS number： 72-19-5
Molecular formula： C4H9NO3
molecular weight： 119.1192
Chemical structure：
| Product Name | L-THREONINE | |
| Shelf Life | 2 years | |
| ITEMS | STANDARD | RESULT |
| ASSAY: (ON DRY MATTER) | 98.5%~101.5% | 99.7% |
| IDENTIFICATION | IR TEST | CONFORMS |
| SPECIFIC ROTATION | -26.7°~-29.1° | -27.8° |
| PH | 5.0-6.5 | 5.8 |
| LOSS ON DRYING | 0.2% MAX | 0.15% |
| RESIDUE ON IGNITION | 0.4% MAX | 0.06% |
| CHLORIDE | 0.05%MAX | 0.02% |
| SULPHATE | 0.03%MAX | CONFORMS |
| IRON | 0.003% MAX | CONFORMS |
| HEAVY METALS | 15PPM MAX | CONFORMS |
| CHROMATOGRAPHIC PURITY | PASS USP TEST (0.5% MAX INDIVIDUAL IMPURITY,2% MAX OF TOTAL IMPURITIES) | CONFORMS |
| ORGANIC VOLATILE IMPURITIES | MEETS THE REQUIREMENTS | CONFORMS |
| RESULT: THE GOODS CONFORMS WITH USP28 PHARM GRADE | ||
