This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anticoagulants and Coagulants, Subject name: Pharmacology
Mucopolysaccharide having anticoagulant action is- 
Select and explain. 
A. Heparin, B. Phenindione, C. Rivoroxaban, D. Dabigatran
A: Heparin
Answer: A: Heparin 
Explanation: Ans. is 'a' i.e., Heparin Heparino It is a parenteral indirect thrombin inhibitor.o It is a on uniform mixture of straight chain polysaccharides with molecular weight 10,000 - 20,000.o It contains polymers of two sulfated disaccharide units D glucosamine L iduronic acid and D glucosamine D glucuronic acid.o Heparin is the strongest organic acid present in the body.