

| English name: | L-Isoleucine, L - 2 - amino - 3 - methyl pentanoic acid | 
| CAS No: | 73-32-5 | 
| EINECS NO. | 200-798-2 | 
| InChI | 1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1 | 
| Chemical formula: | C6H13NO2 | 
| Molecular weight: | 131.17 | 
| Appearance and properties: | White crystal or crystalline powder; odorless, slightly bitter taste. This product is slightly soluble in water, almost insoluble in ethanol or ether. | 
| Assay: | 98.5~101.5% | 
| Melting point | 168-170ºC | 
| Water solubility | 41.2G/L(50ºC) | 
| Optical rotation: | +38.9~+41.8 | 
| PH: | 5.5~7.0 | 
| Residue on ignition: | ≤0.30% | 
| Loss on drying: | ≤0.30% | 
| Heavy metal: | ≤15ppm | 
| Chloride: | ≤0.05% | 
| Sulfate: | ≤0.03% | 
| Iron : | ≤30ppm | 
| Use: | Used as amino acid injection, compound amino acid infusion, food additives, nutritional supplements. | 
| Specification: | USP36 | 
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