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66871-26-9

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66871-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66871-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,7 and 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 66871-26:
(7*6)+(6*6)+(5*8)+(4*7)+(3*1)+(2*2)+(1*6)=159
159 % 10 = 9
So 66871-26-9 is a valid CAS Registry Number.

66871-26-9Relevant articles and documents

Reaction of Dialkyl Phosphites with α-Enones. I. - Synthesis and Allylic Rearrangement of Dimethyl (1-Hydroxy-2-alkenyl)- and (1-Hydroxy-2-cycloalkenyl)phosphonates

Oehler, Elisabeth,Zbiral, Erich

, p. 175 - 184 (2007/10/02)

Various β,γ-unsaturated α-hydroxyphosphonates 3 are prepared in good yields by NaOCH3-catalyzed regioselective 1,2-addition of dimethyl phosphite to acyclic and cyclic α-enones at -35 deg C.On acid-catalyzed acetylation, the allylic α-hydroxyphosphonates

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