21844-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21844-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,4 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21844-71:
(7*2)+(6*1)+(5*8)+(4*4)+(3*4)+(2*7)+(1*1)=103
103 % 10 = 3
So 21844-71-3 is a valid CAS Registry Number.
21844-71-3Relevant articles and documents
Synthesis of Tuftsin Using Picolyl Ester Method.
Dasgupta, S.,Chauhan, V. S.
, p. 1138 - 1141 (2007/10/02)
A convenient and quick synthesis of tuftsin, a immuno-modulating tetrapeptide is reported.The intermediates are isolated and characterised as picolyl ester derivatives.The synthetic tetrapeptide is found to be fully active.
