L-methionine
City: Marupe
Please avoid sudden changes in temperature and humidity, as they may affect the condition of derivative ingredients and tablets.
The shelf life begins from the date of manufacture at the factory.
Taking into account logistical and transportation stages, the remaining shelf life of the product is always shorter than the full shelf life.
We ship products to our customers with a remaining shelf life of no less than 70%.
CERTIFICATE OF ANALYSIS
Product | L-Methionine |
Production Date | 2024.11.22 |
Expiration Date | 2027.11.21 |
Lot Number | HHAD24112201 |
1. Chemical /Analytical Information
This product meets quality requirements of USP40 Monograph
Analysis Item | Specification | Method | Result |
Characters, Appearance |
White or almost white, crystalline powder or colourless crystals | Visual | White powder
|
Identification | Infrared absorption | USP40 | Conform |
Assay | NLT 98.5% and NMT 101.5% | USP40 | 100.20% |
Residue on ignition | NMT 0.4% | USP40 | 0.06% |
Chloride(CL) | NMT 0.05% | USP40 | ＜0.05% |
Sulfate(SO4) | NMT 0.03% | USP40 | ＜0.03% |
Iron(Fe) | NMT 30 ppm | USP40 | ＜30 ppm |
Lead | NMT 1 ppm | USP43 | ＜1 ppm |
Arsenic | NMT 0.5 ppm | USP43 | ＜0.5 ppm |
Cadmium | NMT 0.5 ppm | USP43 | ＜0.5 ppm |
Mercury | NMT 0.1 ppm | USP43 | ＜0.1 ppm |
Related compounds | Individual impurities: NMT 0.5% | USP40 | ＜0.5% |
Total impurities: NMT 2.0% | ＜2.0% | ||
Specific rotation[α]D25 | +22.4～+24.7° | USP40 | +23.55° |
PH | 5.6 ~ 6.1 | USP40 | 5.71 |
Loss on drying | NMT 0.3% | USP40 | 0.15% |
2. MicrobiologicalInformation
Analysis Item | Specification | Method | Result |
Total Aerobic Microbial Count | NMT 1000 cfu/g | USP43 | ＜1000 cfu/g |
Molds and Yeasts Count | NMT 100 cfu/g | USP43 | ＜100 cfu/g |
Coliform bacteria | Negative/10g | Testing Plate | Negative |
Salmonella sp. | Negative/10g | Testing Plate | Negative |
Staphylococcus aureus | Negative/10g | TestingPlate | Negative |