Drug impurities: refers to trace substances in drugs that have no therapeutic effect or affect the stability and efficacy of drugs, or are even harmful to human health. Substances that have toxic side effects on human health; substances that have no toxic side effects themselves, but affect the stability and efficacy of drugs; substances that have no toxic side effects themselves, and do not affect the stability and efficacy of drugs, but affect the scientific management of drugs. Drug impurities are degradation products of drug ingredients, reaction by-products, solvent residues or other substances that may affect the quality of drugs. Drug impurity reference substances are special measuring tools used for drug quality control, mainly used to check the content and type of impurities in drugs. It is an important part of drug quality standards. By comparing with the drug to be tested, the type and content of impurities in the drug can be determined, thereby ensuring the purity and stability of the drug.
Anti-tumor drugs are a type of drug used to treat tumors, including chemotherapy drugs and biological agents. They have become one of the important means of clinical treatment of tumors. ChemScene provides a series of impurity reference substances for anti-tumor drugs to meet customer reporting needs.
Anti-infective drugs are mainly used to treat infections caused by pathogens (such as viruses, bacteria, fungi, etc.). ChemScene provides a series of impurity reference substances for anti-infective drugs to meet customer declaration needs.
Cardiovascular drugs refer to a class of drugs used to prevent and treat heart and cerebrovascular diseases. These drugs act on the cardiovascular system through various mechanisms to improve heart function, lower blood pressure, and improve blood circulation, thereby reducing the risk of cardiovascular and cerebrovascular diseases and related complications. ChemScene provides a series of impurity reference substances for cardiovascular and cerebrovascular drugs to meet customer reporting needs.
Contrast agents are special drugs used in medical imaging, mainly used to enhance the contrast of imaging examinations (such as X-rays, CT, MRI and ultrasound) to more clearly show the structure and lesions of organs and tissues in the body. ChemScene provides a series of impurity reference substances for contrast agents to meet customer declaration needs.
Nervous system drugs refer to a class of drugs used to treat diseases and symptoms related to the nervous system. These drugs can affect the central nervous system and peripheral nervous system and are widely used to relieve pain, treat mental disorders, control epilepsy, and manage neurodegenerative diseases. ChemScene provides a series of impurity reference substances for nervous system drugs to meet customer declaration needs.
Digestive system drugs refer to drugs used to treat diseases related to the digestive system. These drugs can affect the function of the gastrointestinal tract, including promoting digestion, relieving excessive gastric acid, controlling diarrhea and constipation, etc. ChemScene provides a series of impurity reference substances for digestive system drugs to meet customer reporting needs.
Glycemic-lowering drugs refer to drugs used to treat diabetes and lower blood sugar levels. ChemScene provides a series of impurity reference substances for glucose-lowering drugs to meet customer reporting needs.
Respiratory system drugs refer to drugs used to treat diseases related to the respiratory system. These drugs can improve airway patency, reduce inflammation, control infection, and relieve breathing difficulties. ChemScene provides a series of impurity reference substances for respiratory system drugs to meet customer declaration needs.
Anesthetic drugs are drugs used to cause loss of perception, analgesia, and suppression of consciousness to facilitate surgery or other medical procedures. Anesthetic drugs can be divided into two categories: general anesthesia and local anesthesia. ChemScene provides a series of impurity reference substances for anesthetic drugs to meet customer reporting needs.
Urinary system drugs refer to a class of drugs used to treat urinary system related diseases. The effects of these drugs include anti-infection, improving urination, regulating electrolyte balance, etc. ChemScene provides a series of impurity reference substances for urinary system drugs to meet customer reporting needs.