The Forssman antigen is a complex glycolipid found on the surface of various animal cells, including humans, and is named after the German immunologist August von Wassermann and his student, Paul Uhlenhuth, who discovered it in 1901. It is composed of a ceramide molecule linked to a trisaccharide chain, which includes galactose, N-acetylgalactosamine, and glucose. The Forssman antigen is significant in immunology because it can trigger an immune response in certain species, such as rabbits, when injected, leading to the production of antibodies against it. This property has been utilized in various diagnostic tests and research applications, particularly in the study of autoimmune diseases and the development of vaccines.
The CAS Registry Mumber 9013-60-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,1 and 3 respectively; the second part has 2 digits, 6 and 0 respectively. Calculate Digit Verification of CAS Registry Number 9013-60: (6*9)+(5*0)+(4*1)+(3*3)+(2*6)+(1*0)=79 79 % 10 = 9 So 9013-60-9 is a valid CAS Registry Number.