WELCOME TO : changtong pharmaceutical chemical products co.,ltd.

Cas no.:20123-80-2 Another name in english:calcium dobesilate mnohydrate Einecs:243-531-5 Molecular formular:(c6h5o5s)2.ca;c12h10ca2 Molecular weight:418.41 Calcium dobesilate capsule(calcium dobesilate)is a kind of oral vascular protective agent,which has obvious inhibition and reverse effect against DRthree highsfactors.it can reduce the high permeability of blood capillary,the high viscosity of blood,and the hight-activity of platelet,and therefore reducing the retinal exudation and bleeding as well as the rate of micro hemangioma.studies show that taking preventive medicine taken before clinical visible retinopathy after the diabetes was confirmed is beneficial for DR prognosis.This product has treatment effect in various aspects,i.e. By lowering the permeability of blood capillary and stabilizing the blood retinal barrier,the retinal blood leakage can be reduced and the normal blood dilution can be maintained;;by reducing the macromolecular plasma protein and the erythrocyte rigidity and coherece blood circulation can be improve;by reducing the high coherence of the platelet

changtong p-chemicals co.,ltd.,founded in 1998,has requisitioned a land covering an area of 23000 square meters in 2005 in the economic and technological development zone of weinan city,shaanxi province to meet the enterprise development needs of building a fully integrated high-tech private enterprise that is long-term committed to the production of pharmaceutical raw materials,pharmaceutical intermediates,daily chemicals,food additives and other products.the company has 76 employees,8 middle and senior management peronnel,25 middle and senior technical personnel,and business area of 23000square meters since its opening for business for 15 years. (the following cited is from News column of science and technology bureau of linwei district) the company has a modern raw materials and intermediates production base which is built in accordance with gmp standard and supported by advanced production equipment,i.e.a set of advanced testing equipment introduced from shimadzu corporation of japan(gas chromatograph,high-performance liquid chromatograph,infrared spectrophotometer and uv-vis spectrophotometer,ect.)which receives regular examination by the provincial quality supervision departments to ensure the scientific and effctive detection;meanwhile,the company has implemented the prevailing international pharmaceutical production and management satandards in the production and operration to ensure the high quality ,meet the safe and reliable bpc production requirements,and make the product quality ranks top in the industry. up to the present,the company has started large-scale production of above 30 products,including the medicine to cure antiviral,high blood pressure and mental health,among them,quality of hydroxy benzene sulfonate,raloxifene hydrochloride,semi-quetiapine fumarate,and fumalic acid series is better than that of many domestic products,while the other products including homopiperazine and bunazosin have filled the blank of the domestic.in the last 15 years,while focusing on the domestic market development,the company has won the trust of customers and set up a good enterprise image based on the high quality products and good reputation,and had its products sold to europe,asia,the middle east and other parts of the world.

Cas no.498-00-0 Name in english:4-hydroxy-3-methoxybenzyl alcohol Another name in english:4-hydroxymethyl-2-methoxy-phenol Einecs:207-852-4 Molecular formular:c8h10o3 Molecular weight:154.16 Prismatic crystal(water),with the melting point of 115c,soluble in water and ethanol existing in stem tuber of gastrodia elata B1.It is effective ingredient of gastrodia elata with obvious sedative effect;it can decrease the spontaneous activity of the mice,prolong the sleep time of cycloalkene barbitone sodium,and also promote the bile secretion.content 99%

Name in english:4-hydroxy-3-methoxycinnamic acid Einecs:214-490-0 Molecular formular:c10h10o4 Molecular weight:194.19 Main application: Ferulic acid,with the chemical name of 4-hydroxy-3-methoxycinnamic acid,is a derivative of cinnamic acid(also called phenyla-crylic acid,3-phenyl-2 acrylic acid according to the molecular structure).it is a kind of phenolic acid that is originally discovered in plant seeds and leaves and widely existed in plants,and it forms the cellwall skeleton by combining with polysaccharide and protein. Due to its effectiveness and highter content in asafoetida,angelica,lingusticum wallichii,cohosh,seed of wild jujube and other chinese medicinal materials,it has become one of the indicators to judge quality of the chinese patent bran.in recent years,the pharmacological functions,biological activity and low toxicity of various ferulic acid and their medicine,health products and cosmetics raw materials and food additives.it has been used as the basic raw material of the medicines that can treat the cardiovascular diseases and leukopenia,such as xinxuekang,limai capsule and taitai oral solution,etc.,and has the functions of body building and skin smoothing and protecting.

Cas no.82640-04-8 Molecular formular:c28h27no4s,hcl;c28h28clno4s Molecular weight:510.05 evista® is the english trade name of raloxifene,it is kind of selective estrogen receptor modulator(serm).this product can disturb some activites and simulate other actions of estrogen.it is effective in preventing the menopausal osteoporosis due to its function of increasing the bone density. Currently,researches have been made on the possibility of raloxifene in prevention and treatment of breast cancer.there is another medicine that has similar mechanism,namely tamoxifen,which has been used in the treatment of breast cancer for a longer period of time.it is hoped that raloxifene will be as effective as tamoxifen,with less adverse effects.