178809-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178809-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,8,0 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 178809-91:
(8*1)+(7*7)+(6*8)+(5*8)+(4*0)+(3*9)+(2*9)+(1*1)=191
191 % 10 = 1
So 178809-91-1 is a valid CAS Registry Number.
178809-91-1Relevant academic research and scientific papers
Synthesis of phenylpyrrolylpyrroles. Part II
Dumoulin,Rault,Robba
, p. 255 - 258 (2007/10/03)
A series of methyl or ethyl 3-(N-arylpyrrol-3-yl)-1H-pyrrole-2-carboxylates and 2,4-dicarboxylates have been synthesized using an alkyl isocyanides addition-cyclization with N-arylpyrrole derivatives such as the carboxaldehydes and nitropropenes.
