138956-11-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138956-11-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,5 and 6 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138956-11:
(8*1)+(7*3)+(6*8)+(5*9)+(4*5)+(3*6)+(2*1)+(1*1)=163
163 % 10 = 3
So 138956-11-3 is a valid CAS Registry Number.
138956-11-3Relevant academic research and scientific papers
Synthesis of the Staurosporine Aglycon
Moody, Christopher J.,Rahimtoola, Kulsum F.,Porter, Barry,Ross, Barry C.
, p. 2105 - 2114 (2007/10/02)
A short synthesis of the staurosporine aglycon (6) is reported, the indolocarbazole skeleton being constructed by an intramolecular Diels-Alder reaction followed by a nitrene-mediated ring closure.The synthesis starts by acylation of ethyl indole-2-acetat
