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1385043-49-1

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1385043-49-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1385043-49-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,5,0,4 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1385043-49:
(9*1)+(8*3)+(7*8)+(6*5)+(5*0)+(4*4)+(3*3)+(2*4)+(1*9)=161
161 % 10 = 1
So 1385043-49-1 is a valid CAS Registry Number.

1385043-49-1Downstream Products

1385043-49-1Relevant articles and documents

Synthesis of new γ-lactones from preactivated monosubstituted pyrazines and TMS-ketene acetals

Garduno-Alva, Azucena,Ortega-Alfaro, M. Carmen,Lopez-Cortes, Jose G.,Chavez, Isabel,Barroso-Flores, Joaquin,Toscano, Ruben A.,Rudler, Henri,Alvarez-Toledano, Cecilio

, p. 469 - 482 (2012)

The double addition of bis(trimethylsilyl) ketene acetals (1a-1b, R 1 = CH3,-(CH2)5-) to 2-substituted pyrazines promoted by triflic anhydride leads to γ-lactones in a single step. A systematic study involving electron-withdrawing and electron-donating groups (R2 = CN, COOMe, PhCH=CH, Cl, Me, OMe) in the pyrazine ring reveals a strong dependence of electronic effects on the regiochemistry of nucleophilic addition.

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