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163891-38-1

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163891-38-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163891-38-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,8,9 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 163891-38:
(8*1)+(7*6)+(6*3)+(5*8)+(4*9)+(3*1)+(2*3)+(1*8)=161
161 % 10 = 1
So 163891-38-1 is a valid CAS Registry Number.

163891-38-1Downstream Products

163891-38-1Relevant articles and documents

Isomerization of N-aryl substituted diethyl 3-aminoglutaconates. Part I

Charvat, Tomas,Potacek, Milan,Humpa, Otakar,Marek, Jaromir

, p. 271 - 276 (2007/10/03)

Diethyl acetonedicarboxylate 1 under acid catalysis reacts with aromatic amines and 2-aminonitriles 2 forming N-aryl substituted diethyl 3-aminoglutaconates 3. The structures of the products 3 were studied both in the solid and the liquid state. The presence of the double bond permits two isomeric forms. These E and Z isomers can interchange with one another under catalysis by either an acid or a base in a suitable solvent. The isomeric equilibriums were studied by 1H NMR spectroscopy with respect to dependence on the polarity of the solvent, the temperature and the substitution present on the aromatic skeleton.

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