78267-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78267-23-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,2,6 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 78267-23:
(7*7)+(6*8)+(5*2)+(4*6)+(3*7)+(2*2)+(1*3)=159
159 % 10 = 9
So 78267-23-9 is a valid CAS Registry Number.
78267-23-9Relevant academic research and scientific papers
Some Reactions of Ethyl 2-Anilino-4-oxo-4,5-dihydrothiophen-3-carboxylate
Faull, Alan W.,Hull, Roy
, p. 1078 - 1082 (2007/10/02)
Phenyl isothiocyanate reacts with ethyl γ-chloroacetoacetate in the presence of sodium hydride to give ethyl 2-anilino-4-oxo-4,5-dihydrothiophen-3-carboxylate (1b).The compound (1b) shows typical reactions of a keto-methylene compound; the Vilsmeier reage
