81331-51-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81331-51-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,3 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81331-51:
(7*8)+(6*1)+(5*3)+(4*3)+(3*1)+(2*5)+(1*1)=103
103 % 10 = 3
So 81331-51-3 is a valid CAS Registry Number.
81331-51-3Relevant academic research and scientific papers
A MILD METHOD FOR THE SYNTHESIS OF 2-KETOPYRROLES FROM CARBOXYLIC ACIDS
Nicolaou, K. C.,Claremon, D. A.,Papahatjis, D. P.
, p. 4647 - 4650 (2007/10/02)
A mild method for the synthesis of 2-ketopyrroles from carboxylic acids via 2-pyridylthiolesters and pyrrylmagnesium chloride is described.
