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1381803-89-9

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1381803-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1381803-89-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,1,8,0 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1381803-89:
(9*1)+(8*3)+(7*8)+(6*1)+(5*8)+(4*0)+(3*3)+(2*8)+(1*9)=169
169 % 10 = 9
So 1381803-89-9 is a valid CAS Registry Number.

1381803-89-9Relevant articles and documents

Approaches to the construction of substituted 4-amino-1 H -pyrrol-2(5 H)-ones

Zali-Boeini, Hassan,Mobin, Mehdi,Hajibabaei, Khadijeh,Ghani, Maryam

experimental part, p. 5808 - 5812 (2012/07/31)

Fully substituted 4-aminopyrrolones are easily accessed via simple routes starting from imines, ketones, or α-bromophenyl acetonitriles. Imines were reacted with KCN/NH4Cl in aqueous ethanol to produce α-arylamino benzyl cyanides. On the other hand, ketones were transformed to the desired α-amino nitriles using a modified Strecker reaction. Then, α-amino nitrile precursors were allowed to react with a suitable acyl halide to produce the corresponding amides. Further treatment of these amides with ethanolic KOH converted them to highly substituted 4-amino-1H-pyrrol-2(5H)- one derivatives in moderate to excellent yields.

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