Product Introduction: Sodium dalteparin is the sodium salt of low-molecular-weight heparin obtained by depolymerization of porcine intestinal mucosal heparin using nitrous acid. Most of its components have a non-reducing end. 2- O - Thio- -α-L Pyranoic acid structure and has one at the end of their chain reduction. 6- O - Thio- -2 ， 5- Dehydration -D- Mannitol structure. The average relative molecular weight is 5600 ~ 6400 , the characteristic molecular weight is 6000. with a relative molecular weight below 3000 The chain is lower than 13% ( w/w ), with a relative molecular weight higher than 8000 The proportion occupied by the chain is 15% ~ 25% ( w/w ). The degree of sulfation for each disaccharide unit is 2.0 ~ 2.5 Per milligram, based on dry matter, the anti-factor X. a Active potency is 110 ~ 210 U, anti-factor X a With IIa The active potency ratio is 1.9 ~ 3.2 Sodium dalteparin is a white or off-white powder that is hygroscopic and readily soluble in water.