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1257878-63-9

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1257878-63-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257878-63-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,8,7 and 8 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1257878-63:
(9*1)+(8*2)+(7*5)+(6*7)+(5*8)+(4*7)+(3*8)+(2*6)+(1*3)=209
209 % 10 = 9
So 1257878-63-9 is a valid CAS Registry Number.

1257878-63-9Relevant articles and documents

Synthesis of amino-1,2,4-triazoles by reductive ANRORC rearrangements of 1,2,4-oxadiazoles

Palumbo Piccionello, Antonio,Guarcello, Annalisa,Buscemi, Silvestre,Vivona, Nicolo,Pace, Andrea

, p. 8724 - 8727 (2010)

The reaction of various 1,2,4-oxadiazoles with an excess of hydrazine in DMF has been investigated. 3-Amino-1,2,4-triazoles are produced through a reductive ANRORC pathway consisting of the addition of hydrazine to the 1,2,4-oxadiazole followed by ring-opening, ring-closure, and final reduction of the 3-hydroxylamino-1,2,4-triazole intermediate. The general applicability of 1,2,4-oxadiazoles ANRORC reactivity is demonstrated also in the absence of C(5)-linked electron-withdrawing groups.

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