121444-33-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121444-33-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,4,4 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121444-33:
(8*1)+(7*2)+(6*1)+(5*4)+(4*4)+(3*4)+(2*3)+(1*3)=85
85 % 10 = 5
So 121444-33-5 is a valid CAS Registry Number.
121444-33-5Relevant academic research and scientific papers
Convenient Preparation of Dimethyl -phosphonate
Harre, Michael,Trabandt, Joerg,Westermann, Juergen
, p. 1081 - 1084 (2007/10/02)
The diastereoselective alkylation of the chiral Evans intermediate 2 with 1-iodo-2-pentyne (3) gives the oxazolidinone 4.Titanium alkoxide-catalysed cleavage yields the ethyl ester 5, which is used to acylate dimethyl methanephosphonate to the chiral phos
