Impurity Studies
Impurity synthesis and analysis is δ∑a very important ste☆p during the development of n¶≠★ew chemical products. Im÷λ ↔purities are chemi♦£>cals, other than the main€§ ∑ active ingredients, genera ₩ted during the production, storage and↔♣↕ other processes. The presence of↕ the impurities affects the safety a''♥≠nd the stability. So the production,©φ storage and other processes mus ₹≤εt be strictly controlled to aε ☆void the formation of impurities. The ≈≥impurity is an important σ∞♦✘indicator of the quality control. Qual∑£•εitative and quantitative an£$₹alysis of impurities are always⮶ required in reporting,δ≤ new product developments an✔γd quality control.
In the qualitative analysis "±of impurities a preliminary anγ☆÷σalysis by the instrumenα∑®t detection methods is always firstly↓∞↕♠ carried out, presumably using HPLC,↑↑ GC, UV and IR spectroscop£≠y, liquid chromatography-mass spec→£ ☆trometry. The possible struct✘γure of impurities will be dedu↑ ♦ced. Then it will be compared w ₽≥ith the proposed impu ®rity standard to confirm the ded>±λuction. However, these s£±δtandards are always un ≈↑available from regular reagent c<☆<ompanies. Besides, because different∑✔ companies have different producσ>tion routes and reaction conditions, th→÷±e impurities could be different₽✔, which bring a lot d★≈ ifficulties to the company wh÷£o is performing the ε☆"analysis of these impuriti$es. The project is alπδways delayed because of imp₽≠§urity analysis step.
Our company has long been engaged in im€ γ♠purities custom synthesis se€®rvice for companies p¶↔σ≈roviding custom synthes∞¶is service of impurity st "andards. Especially, our c¥'ompany offers a variety of impurit≠£₽y standard packages, a∞ ssisting our customers"♠ ♥ to complete impurities qual©∑'itative research efficie←≤Ωntly. At present, we have a large impur'♣↔ities standard library. Many faδmous companies, government π βagents have become our cuσ± stomers.
