257947-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 257947-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,4 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 257947-28:
(8*2)+(7*5)+(6*7)+(5*9)+(4*4)+(3*7)+(2*2)+(1*8)=187
187 % 10 = 7
So 257947-28-7 is a valid CAS Registry Number.
257947-28-7Relevant academic research and scientific papers
Resolution of 2-hydroxy-3-amino-3-phenylpropionamide and its conversion to C-13 sidechain of taxanes
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, (2008/06/13)
The present invention provides an efficient route to the C-13 side chain of the anti-cancer drug paclitaxel (TAXOL) and its analogs. The process includes the resolution of racemic erythro 2-hydroxy-3-amino-3-phenylpropionamide by diastereomeric crystalliz
