139520-53-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139520-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,5,2 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139520-53:
(8*1)+(7*3)+(6*9)+(5*5)+(4*2)+(3*0)+(2*5)+(1*3)=129
129 % 10 = 9
So 139520-53-9 is a valid CAS Registry Number.
139520-53-9Relevant academic research and scientific papers
Peptide modification by introduction of α-trifluoromethyl α-amino acids via 4-trifluoromethyl-1,3-oxazolidin-2,5-diones
Schierlinger, Christian,Burger, Klaus
, p. 193 - 194 (2007/10/02)
α-Trifluoromethyl substituted α-amino acids can be introduced into the N-terminal position of peptides on carboxyl group activation via Leuchs anhydrides.
