Shanghai Bojing Chemical Co., Ltd has establised for many years. We are a professional chemical trade company with an outstanding sales team. Meanwhile we have our own factory.CAS NO.108-03-2(1-Nitropropane) ,CAS NO.79-24-3 (Nitroethane), CAS NO.366-18-7(2,2-Dipyridyl), CAS NO.73-24-5(Adenine),CAS NO.118-00-3( Guanosine ),all manufactured by ourselves ,we can supply you competitive price with high purity.Also we supply any other chemicals such as pharmecutical intermediates,dissolvent,chemical reagents and paint and resin intermediates.I believe our service and proucts will let you feel satisefied.