MF: C19H23N4O6PS MW: 466.45 Density: 1. 444 g/mL at 25 °C 、 Boiling point: 745.1 °C (20 mmHg) Flash point: 404.4°C Assay: 98.0—102.0% Appearance: white or almost white crystalline powder Application: Benzene phosphorus thiamine is vitamin B1 fat soluble derivatives, improve the bioavailability of water-soluble vitamin B1 low shortcomings, improve the blood and tissue concentrations of thiamine, so as to improve the curative effect. Benzene phosphorus thiamine already in the United States, Japan, Europe and other parts of the world wide market, its dosage forms listed dosage forms such as tablets, granules, indications are: A. is used for the prevention and treatment of vitamin B1 deficiency; B. for vitamin B1 demand increase, with inadequate intake from foods supplies (fatigue, hyperthyroidism, pregnancy, lactation, during strenuous manual labor, etc.); C. is used in the treatment of non alcoholic wernicke encephalopathy; D. to treat beriberi; E. used in the following diseases, speculation and vitamin B1 deficiency and metabolic disorders associated with treatment, such as: neuralgia; Muscle pain, joint pain; Peripheral neuritis, peripheral nerve palsy; Myocardial metabolic disorders; Constipation and other gastrointestinal motor function obstacle. Description White to almost white crystal Identification A: IR spectra shows the similarity between sample and standard B: The retention time of the major peak corresponds with it of the reference standard Solution color and clearness Colorless to pale-yellow clear solution Chlorides Not more than 0.053% Sulphate Not more than 0.011% Loss on drying Not more than 1.5% Heavy metals Not more than 0.002% Related Substances TMP :Not more than 0.15% Benzoic acid :not more than0.1% Amide: not more than 0.40% Single unknown impurity: not more than0.1% Thiamine: not more than0.1% Total impurities: Not more than 1.5% Residual solvents Dichloromethane: not more than 600ppm Isopropanol: not more than300ppm Microbial limits Total bacteria: not more than100cfu/g Yeast and mould: not more than50cfu/g Escherichia coli: no detectable Assay(Dry Basis) 98.0%~102.0%