87753-40-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87753-40-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,5 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 87753-40:
(7*8)+(6*7)+(5*7)+(4*5)+(3*3)+(2*4)+(1*0)=170
170 % 10 = 0
So 87753-40-0 is a valid CAS Registry Number.
87753-40-0Relevant academic research and scientific papers
3-Amino-thienofurans and 3-Amino-thienofurans
Gewald, K.,Bellmann, P.
, p. 457 - 462 (2007/10/02)
The O-alkylation of 2-hydroxy-thiophene-3-carbonitriles (1) with α-bromocarbonyl compounds yields the 2-alkoxy-thiophene-3-carbonitriles (2a-f) among them 2-benzoylmethoxy-thiophene-3-carbonitriles (2a-c) which undergo Thorpe-Ziegler-cyclization to form t
