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| Customization: | Available | 
|---|---|
| CAS No.: | 497-30-3 | 
| Formula: | C9h15n3o2s | 
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  | Test Items | Specifications | Results | Test Method | 
| Assay | ≥99.0% | 99.25% | HPLC | 
| Appearance | White to off-white powder | Conforms | Visual observation | 
| Identification | HPLC retention time correspond to WRS | Conforms | HPLC | 
| Loss on drying | ≤0.50% | 0.18% | USP<731> | 
| Ethanol residue | ≤500ppm | 137ppm | GC | 
| Heavy metals | ≤20ppm | Conforms | USP<231> | 
| Arsenic(AS2O3) | ≤2ppm | Conforms | ICP-MS | 
| Lead(Pb) | ≤1ppm | Conforms | ICP-MS | 
| Mercury (Hg) | ≤0.2ppm | Conforms | ICP-MS | 
| Cadmium(Cd) | ≤0.3ppm | Conforms | ICP-MS | 
| Total plate count | ≤1000cfu/g | Conforms | USP<61> | 
| Yeast and molds | ≤100cfu/g | Conforms | USP<61> | 
| Coliforms | ≤10mpn/g | Conforms | MPN | 
       
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      Negative in 10g | Negative | USP<62> | 
| Salmonella | Negative in 10g | Negative | USP<62> | 
| S.aureus | Negative in 10g | Negative | USP<62> | 
| Conclusion | The product conforms to In-house Standard | ||