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74809-02-2

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74809-02-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74809-02-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,0 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74809-02:
(7*7)+(6*4)+(5*8)+(4*0)+(3*9)+(2*0)+(1*2)=142
142 % 10 = 2
So 74809-02-2 is a valid CAS Registry Number.

74809-02-2Relevant articles and documents

New General Synthesis of Tetrahydro-1,2,4,5-tetrazin-3(2H)-one Derivatives and Stable 3,4-Dihydro-3-oxo-1,2,4,5-tetrazin-1(2H)-yl Radical Derivatives

Milcent, Rene,Barbier, Geo,Capelle, Sylvie,Catteau, Jean-Pierre

, p. 319 - 324 (2007/10/02)

Reactions of 2-chloroformylhydrazones of aromatic aldehydes or ketones 2 with various hydrazines were converted to monocarbonohydrazone derivatives 3 or 5 and/or tetrahydro-1,2,4,5-tetrazin-3(2H)-one derivatives 6,7.By oxidation with lead dioxide, compounds 6 were transformed into stable 3,4-dihydro-3-oxo-1,2,4,5-tetrazin-1(2H)-yl radical derivatives 8.

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