, 3,3 ',5,5 tetramethylbenzidine (biological level) English name : 3,3' '5. 5-Tetramethylbenzidine (TMB) certification : BO40085738 foreign concept (Appearance) : white crystalline powder content (assay) : Molecular Formula ≥ 99% (Molecular fornula) : C16H20N2 molecular weight (Molecular wt) : 240.3 melting point (Melting point) : 169-170 ℃ CAS : 54827-17-7 origin : Luoyang ELISA reagent --TMB 3,3 '5. 5-tetramethylbenzidine (TMB) is a new safety original color reagents. With the traditional color of the original reagents benzidine, o-toluidine and o-phenylene diamine and above, TMB has high sensitivity and stability advantages and the use of safety by animal experiments and automatic Ames bacterial mutation test results show that TMB as a non-carcinogenic and non-mutagenic. TMB currently has gradually replaced carcinogens benzidine and other carcinogenicity of benzidine derivatives, used in clinical laboratories, forensic testing, forensic and environmental testing, and other fields. Especially in clinical biochemistry, TMB as the new peroxidase substrate, In the public analysis of enzyme immunoassay (EIA) and enzyme-linked immunosorbent assay test (ELISA) was used extensively. TMB main application is as follows : a urine test paper together the preparation 2, the detection of hepatitis C virus 3, 4 pregnancy testing, Blood and urine glucose, hemoglobin, albumin in the fast five, six fecal occult blood test, blood leukocytes value of the detection of seven, steroids, hormone detection 8, the activity in September, antigen, antibody and the analysis of genetic material to detect 10, saliva alcohol Rapid Determination 11, the biological samples were 12, water testing, detection of fingerprints showed traits : a light yellow crystalline white powder, odorless, tasteless. Insoluble in water, soluble in acetone, ether, DMSO, dimethyl formamide, and other organic solvents. 3,3 ',5,5 Tetramethylbenzidine hydrochloride biological level English 3,3' '5. 5-Tetramethylbenzidine. drhydroxhloride (TMB-CL) The concept : a white crystalline powder content : ≥ 99% Molecular Formula : C16H20N2.2HCL PH:2.0-2.5 sexual Status : soluble in water origin : Luoyang CAS:64285-73-0 Storage : dark room temperature drying 3,3 '5. 5 Tetramethylbenzidine Kraft biological level English name : 3,3 '' 5. 5-Tetramethylbenzidine sulfate (TMB-S) The concept : containing a white crystalline powder; ≥ 99% Molecular Formula : C16H20N2.H2SO4 sexual Status : water-soluble origin : Luoyang