1218904-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1218904-31-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,8,9,0 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1218904-31:
(9*1)+(8*2)+(7*1)+(6*8)+(5*9)+(4*0)+(3*4)+(2*3)+(1*1)=144
144 % 10 = 4
So 1218904-31-4 is a valid CAS Registry Number.
1218904-31-4Relevant articles and documents
Total synthesis of the Bacteroides fragilis zwitterionic polysaccharide a1 repeating unit
Pragani, Rajan,Seeberger, Peter H.
, p. 102 - 107 (2011/03/17)
Nearly all bacteria capsular polysaccharides are T-cell-independent antigens that do not promote immunoglobulin class switching from IgM to IgG nor memory responses. In contrast, zwitterionic polysaccharides activate T-cell-dependent immune responses by m
