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139243-12-2

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139243-12-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139243-12-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,4 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139243-12:
(8*1)+(7*3)+(6*9)+(5*2)+(4*4)+(3*3)+(2*1)+(1*2)=122
122 % 10 = 2
So 139243-12-2 is a valid CAS Registry Number.

139243-12-2Downstream Products

139243-12-2Relevant articles and documents

Westphal Condensation of N-Aminocycloiminium Salts. Synthesis of Fused Pyridazinium Derivatives

Matia, Maria P.,Garcia-Navio, Jose L.,Vaquero, Juan J.,Alvarez-Builla, Julio

, p. 777 - 780 (2007/10/02)

A series of α-alkyl-N-aminoazinium and -azolium salts 1-15 have been condensed with 1,2-dicarbonyl compounds to produce new heterocyclic cationic species 17-25 with a quaternary nitrogen atom in the bridgehead position.Key Words: Westphal condensation / N

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