Complaint
Name of Product: L-Proline
CAS No: 147-85-3
EC No.: 205-702-2
Molecular formula: C5H9NO2
Molecular Weight: 115.13
L-proline is one of the 20 amino acids that are used to synthesize proteins by the human body. Functions of proline include helping form collagen, regenerating cartilage, forming connective tissue, repairing skin damage and wounds, healing the gut lining, and repairing joints.
| Test Item | Specification |
| Appearance | White crystal or crystalline powder |
| Identification | Infrared Absorption |
| Assay | 98.5% ~ 101.5% |
| Residue on ignition | ≤ 0.4% |
| Chloride(Cl) | ≤ 0.05% |
| Sulfate(SO4) | ≤ 0.03% |
| Iron(Fe) | ≤ 30ppm |
| Heavy metals(Pb) | ≤ 15ppm |
| Related Compounds | Not more than 0.5% of any individual impurity is found; Not more than 2.0% of total impurities is found |
| Specific rotation[α]D25 | -84.3° ~ -86.3° |
| Loss on drying | ≤ 0.4% |
| Test Item | Specification |
Ningbo Newrainbow Biochemicals Co.,Ltd. is an Eastern China-based import and export company dealing with Amino acids, Vitamins, Plant Extracts and all the other Ingredients which are widely used in pharmaceutical, nutraceutical, food and cosmetical industry. Started in the year of 2012, we understand the importance of timely shipping and have built our business around reliable services. From beginning to the end, our customers know that they can trust our team to deliver only the highest quality customer service.
Ningbo is a beautiful city and also an ancient harbour city. It is an important trading port and today with 1.2 billion tons of freight the biggest harbour all over the world. And only 2 hours drive to Shanghai city. Thanks to the big advantages of location, we have very good partners of logistic solution to eliminate all of customers supply chain inefficiencies for you.
Our young company started from the year of 2012, we have developed very good partnership with a lot of manufacturers here and many esteemed customers abroad.All the manufacturers we cooperated are carefully screened and we go to their plant often in case of inspection for some purpose. Certificates such like KOSHER/HALAL/FSSC are all available.
Strictly quality inspection before delivery
Very good logistics and transportation service
Good payment terms
Good communication
