Introduce: Profile: Tractus-Chemistry specializes in pharmaceutical distribution and services. Our pharmaceutical products & services include active pharmaceutical ingredients, pharmaceutical preparations, advanced pharmaceutical intermediates, and custom synthesis services. Our active pharmaceutical ingredients include praziquantel, sucralfate, lomustine, nitrendipine, sodium salicylate, aspirin, oxaliplatin, dacarbazine, pemetrexed disodium, ifosfamide, zoledronic acid, azasetron hydrochloride, dicyclanil and seratrodast. We also offer various fine chemicals such as thiophenes, aromatics and pyridines. Our thiophenes include 5-chlorothiophene-2-carboxylic acid, 5-bromothiophene-2-carboxylic acid, (5-chlorothiophen-2-yl)methanol and 3-iodothiophene. praziquantel is an effective anthelmintic against flatworms. Our lomustine is used for the treatment of primary and secondary brain tumors & solid tumors, and it can be combined with other agents in the treatment of gastric cancer, rectal cancer, bronchogenic cancer and malignant lymphoma. We provide integrated custom synthesis services ranging from drug discovery to commercialization. Our various services include drug discovery support, process research & development and analytical services.