109304-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109304-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,3,0 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109304-20:
(8*1)+(7*0)+(6*9)+(5*3)+(4*0)+(3*4)+(2*2)+(1*0)=93
93 % 10 = 3
So 109304-20-3 is a valid CAS Registry Number.
109304-20-3Relevant academic research and scientific papers
Sugar Amino Acids and Sugar Peptides by Triflate Substitution
Kowollik, Wolfgang,Janairo, Gerardo,Voelter, Wolfgang
, p. 427 - 432 (2007/10/02)
Benzyl 2,3-anhydro-4-O-triflyl-β-L-ribopyranoside (1) reacts with L-alanine benzyl ester (2), L-phenylalanylglycine benzyl ester (4), and 4-aminobenzoic acid tert-butyl ester (6), with inversion at C-4 and formation of a C - N bond between the sugar and t
