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142991-64-8

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142991-64-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142991-64-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,9,9 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 142991-64:
(8*1)+(7*4)+(6*2)+(5*9)+(4*9)+(3*1)+(2*6)+(1*4)=148
148 % 10 = 8
So 142991-64-8 is a valid CAS Registry Number.

142991-64-8Downstream Products

142991-64-8Relevant articles and documents

A facile and convenient synthetic method for N-β-trifluoroacetylvinyl amino acid esters, α-aminoacetophenones and aminoacetonitriles as potentially useful precursors of fluorine-containing pyrroles

Okada,Masuda,Hojo,Inoue

, p. 533 - 535 (2007/10/02)

N-(4,4,4-Trifluoro-3-oxo-1-butenyl) amino acid esters, α-aminoacetophenones and aminoacetonitriles 3 and 4 are easily obtained in excellent yields by O-N exchange reaction of 4-alkoxy-1,1,1-trifluoro-3-alken-2-ones 1 and 2 with some amino acid esters, α-a

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