Factory Price Patent Expired - D-Alanine CAS:338-69-2 99% White crystalline powder – XD BIOCHEM
Factory Price Patent Expired - D-Alanine CAS:338-69-2 99% White crystalline powder – XD BIOCHEM Detail:
| Catalog Number | XD90325 |
| Product Name | D-Alanine |
| CAS | 338-69-2 |
| Molecular Formula | C3H7NO2 |
| Molecular Weight | 89.09 |
| Storage Details | Ambient |
| Harmonized Tariff Code | 29224985 |
Product Specification
| Appearance | White crystalline powder |
| Assay | 98 – 101% |
| Specific rotation | -14.3 to -15.3 |
| Heavy metals | <10ppm |
| Loss on Drying | <0.20% |
| Iron | <2ppm |
| Residue on Ignition | <0.20% |
| Cl | <0.10% |
This study focused on the alanine racemase gene (alr-2), which is involved in the synthesis of d-alanine that forms the backbone of the cell wall. A stable alr-2 knockout mutant of Aeromonas hydrophila HBNUAh01 was constructed. When the mutant was supplemented with d-alanine, growth was unaffected; deprivation of d-alanine caused the growth arrest of the starved mutant cells, but not cell lysis. No alanine racemase activity was detected in the culture of the mutant. Additionally, a membrane permeability assay showed increasing damage to the cell wall during d-alanine starvation. No such damage was observed in the wild type during culture. Scanning and transmission electron microscopy analyses revealed deficiencies of the cell envelope and perforation of the cell wall. Leakage of UV-absorbing substances from the mutants was also observed. Thus, the partial viability of the mutants and their independence of d-alanine for growth indicated that inactivation of alr-2 does not impose an auxo trophic requirement for d-alanine. © FEMS 2015. All rights reserved.
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Our eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" and the theory of "quality the basic, trust the first and management the advanced" for Factory Price Patent Expired - D-Alanine CAS:338-69-2 99% White crystalline powder – XD BIOCHEM , The product will supply to all over the world, such as: France, Brunei, Slovenia, By adhering to the principle of "human oriented, winning by quality", our company sincerely welcomes merchants from at home and abroad to visit us, talk business with us and jointly create a brilliant future.
By Camille from Bandung - 2017.08.28 16:02
This manufacturer can keep improving and perfecting products and service, it is in line with the rules of market competition, a competitive company.
By King from Poland - 2017.11.12 12:31
