China Raw Material Levodopa CAS No.: 59-92-7 with Fast Delivery, Find details about China Levodopa, L-Dopa from Raw Material Levodopa CAS No.: 59-92-7 with Fast Delivery
Product Name | Levodopa | ||
Reference | USP standard | ||
Test Items | Specifications | Results | |
Appearance | White or almost white,crystalline powder | Almost white crystalline powder | |
Identification | The infrared absorption spectrum is in accordance with the spectrum obtained with Levodopa RS. | Conform | |
The retention time of the major peak from the Sample solution corresponds to that of the standard solution,as obtained in the test for Assay. | Conform | ||
Loss on drying | ≤0.5% | 0.1% | |
Residue on ignition | ≤0.1% | <0.1% | |
Specific rotation | -160° to-167° | -161° | |
Related substances (HPLC) | USP impurity A≤0.1% | <RL(RL:0.03%) | |
L-Tyrosine≤0.1% | <RL(RL:0.03%) | ||
USP impurity B≤0.5% | <LOD(LOD:0.004%) | ||
L-Veratrylglycine≤0.1% | <LOD(LOD:0.005%) | ||
Any individual unspecified impurity≤0.1% | <RL(RL:0.03%) | ||
Total impurities≤1.1% | <RL | ||
Assay (HPLC) | 98.0%~102.0% (calculated on dried basis) | 99.2% | |
Residual solvents(GC) | Ethanol≤5000ppm | <LOD(LOD:75ppm) | |
Conclusion | Complies with USP standard |
Q1:Can you give me a discount price? A1:Sure, it depends on your quantity. |
Q2: What about the lead time? A2:Sample needs 3-5 days, mass production time needs 1-2 weeks for order quantity. |
Q3:How do you control the quality? A3:We will make samples before mass production, and after sample approved, we will begin bulk production. |
Q4:How do you ship the goods and how long does it take to arrive? A4:We usually ship by UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional. |
Q5:What is you terms of payment? A5:Our normal payment term is T/T 30% deposit after order signed and 70% before shippment. |
Q6:Is there cheap shipping cost to import to our country? A6:For small order, express will be best. And for bulk order, sea ship way is best but take much time. |