138840-50-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138840-50-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,4 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138840-50:
(8*1)+(7*3)+(6*8)+(5*8)+(4*4)+(3*0)+(2*5)+(1*0)=143
143 % 10 = 3
So 138840-50-3 is a valid CAS Registry Number.
138840-50-3Relevant academic research and scientific papers
Enantiomerically homogeneous intermediates toward the synthesis of descarbamoylcalicheamicinone
Yamashita, Dennis S.,Rocco, Vincent P.,Danishefsky, Samuel J.
, p. 6667 - 6670 (2007/10/02)
Enzymatically mediated kinetic resolution of racemic 12 with lipase PS-30 provides a practical route to the aglycones of descarbamoylcalicheamicin.
