133549-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133549-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,5,4 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 133549-23:
(8*1)+(7*3)+(6*3)+(5*5)+(4*4)+(3*9)+(2*2)+(1*3)=122
122 % 10 = 2
So 133549-23-2 is a valid CAS Registry Number.
133549-23-2Relevant academic research and scientific papers
Masked Lithium Bishomoenolates: Useful Intermediates in Organic Synthesis
Ramon, Diego J.,Yus, Miguel
, p. 3825 - 3831 (2007/10/02)
The lithiation of the chloro ketals 9 with lithium naphthalenide at -78 deg C led to the corresponding masked lithium bishomoenolates 4, which are stable species under these conditions and react with different electrophilic reagents (H2O, D2O, i-PrCOH, Ph
