657412-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 657412-54-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,7,4,1 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 657412-54:
(8*6)+(7*5)+(6*7)+(5*4)+(4*1)+(3*2)+(2*5)+(1*4)=169
169 % 10 = 9
So 657412-54-9 is a valid CAS Registry Number.
657412-54-9Relevant academic research and scientific papers
Bis (amino acid) molecular scaffolds
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Page 14, (2010/02/06)
The present invention provides molecular building blocks of rigid bis(amino acids). The molecular building blocks can be linked together through the formation of rigid diketopiperazine rings, to provide the desired three dimensional structure. Also provided is method of synthesizing macromolecules from the bis (amino acid) building blocks.
