L Tryptophan is an important precusor substance of auxin biosynthesis in plant. It has the similar structure of IAA. It widely exists in higher plant. There are two ways to synthetic auxin.
CERTIFICATE OF ANALYSIS
PRODUCT NAME:L-TRYPTOPHAN PRODUCTION DATE:
BATCH NO: REPORT DATE:
STANDARD:USP/FCC SHELF LIFE:1 YEAR
Tests | Limits | Test results |
Description | White to yellow-white crystals or crystalline powder | conforms |
Identification（IR） | concordant with the reference spectrum | conforms |
Assay | 98.5%～101.5% | 99.7% |
pH | 5.5～6.4 | 5.8 |
Specific rotation[a]D 20 | -30.0°～-33.0° | -31.3° |
Chloride(Cl) | ≤0.05% | <0.05% |
Sulfate(SO4) | ≤0.03% | <0.03% |
Iron(Fe) | ≤30ppm | <30ppm |
Other amino acids | ﹤0.5% | conforms |
Loss on drying | ≤0.30% | 0.11% |
Residue on ignition | ≤0.10% | 0.05% |
Aerobic mesophilic microorganisms | ≤500cfu/g | conforms |
Enterobacteriaceae | Negative/g | conforms |
Salmonella | Negative/25g | conforms |
Conclusion: Passed test according to the Standard of USP/FCC. |
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