| Customization: | Available |
|---|---|
| CAS No.: | 74536-44-0 |
| Formula: | 74536-44-0 |
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| Package | carton drum with two plastic bags inside |
| Net weight | 25KG/Drum |
| Storage | Sealed in cool and dry place to avoid moisture and light |
| Shelf life | 2 years when properly stored |
| Lead time | 1~3 days after confirmation |
| Tests | Specifications | ||
| Character | White or almost white crystalline powder; odourless; taste, bitter, sour. | ||
| Solubility | Freely soluble in water and in metha nol, soluble in ethanol, insoluble in | ||
| chlorofo rm and in ether. | |||
| Melting range | 99-103ºC | ||
| Specific optical rotation | -9.0°~ -12.5° | ||
| Chemistry reaction, should be positive reaction | |||
| Identification | By IR absorption, to match with the working standard | ||
| Spectrophotometry match the working standard | |||
| pH | 3.5-4.5 | ||
| Sulfate | No more than 0.01% | ||
| the sum of the areas of all impurity peaks in the chromatogram obtained | |||
| Related substance | with the test solution is not greater than the area of the principle peak in | ||
| the chromatogram obtained with the reference solution ( 0.5%). | |||
| D-Pyroglutamic acid | The areas of D-pyroglutamic acid is not greater than the area of the | ||
| principle peak in the chromatogram obtained with the reference solution 0.5% | |||
| Other amino acids | Should comply | ||
| Vitamin B6 | No turbidity is produced | ||
| Ethanol | ≤0.5% | ||
| Loss on drying | ≤0.5% | ||
| Residue on ignition | ≤0.2% | ||
| Iron | ≤0.001% | ||
| Heavy metals | ≤10ppm | ||
| Ars enic | ≤0.0001% | ||
| Bacterial count≤100cfu/g | |||
| Microbial limit | Fungus and yeast count ≤10cfu/g | ||
| Escherichia coli should be absent | |||
| Assay | ≥98.0% | ||
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