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144542-86-9

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144542-86-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144542-86-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,5,4 and 2 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 144542-86:
(8*1)+(7*4)+(6*4)+(5*5)+(4*4)+(3*2)+(2*8)+(1*6)=129
129 % 10 = 9
So 144542-86-9 is a valid CAS Registry Number.

144542-86-9Relevant articles and documents

Reactions of Some Pyranoside Diol Monotriflates with Nucleophiles and Bases

Knapp, Spencer,Naughton, Andrew B. J.,Jaramillo, Carlos,Pipik, Brenda

, p. 7328 - 7334 (2007/10/02)

Reaction of pyranoside diol (equatorial) monotriflates with soft, nonbasic nucleophiles is a useful way to make axial heteroatom-substituted and "epimerized" pyranosides, particularly where a fused acetal ring inhibits ring contraction.Among the substrates examined (1,2,3,4,35), only 4 shows a strong tendency to give ring-contracted products.The reaction of 1-3 with more basic nucleophiles (F(1-), t-BuO(1-)) leads to the anhydrosugars 8, 25, and 26, respectively.The SN2 reaction of 35 with tetra n-butylammonium iodide forms the basis for a new synthesis of the Cerny epoxide 32.

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