161973-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161973-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,9,7 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 161973-81:
(8*1)+(7*6)+(6*1)+(5*9)+(4*7)+(3*3)+(2*8)+(1*1)=155
155 % 10 = 5
So 161973-81-5 is a valid CAS Registry Number.
161973-81-5Relevant academic research and scientific papers
Asymmetric Synthesis of the Hydroxylamino Sugar of Calicheamicin
Roush, William R.,Follows, Bruce C.
, p. 4935 - 4938 (2007/10/02)
A stereochemically general procedure for the conversion of 2,3-epoxyalcohols to N-alkoxy oxazolidinones via the DBU promoted cyclizations of 2,3-epoxy-N-alkoxyurethanes has been developed and applied to the first asymmetric synthesis of the calicheamicin
