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31283-03-1

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31283-03-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31283-03-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,2,8 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 31283-03:
(7*3)+(6*1)+(5*2)+(4*8)+(3*3)+(2*0)+(1*3)=81
81 % 10 = 1
So 31283-03-1 is a valid CAS Registry Number.

31283-03-1Relevant articles and documents

Selective access to new semicarbazones and thiosemicarbazones derived from benzil. Study of their conversion reactions

Arquero, Agueda,Canadas, Marta,Martinez-Ripoll, Martin,Mendiola, Ma. Antonia,Rodriguez, Ana

, p. 11271 - 11284 (1998)

New Schiff bases from benzil with semicarbazide and thiosemicarbazide are reported. An open chain molecule, benzilbissemicarbazone 1 was prepared in presence of lithium hydroxide. A cycle 6-methoxy-1,6-diphenyl-4-thio- 3,4,5,6-tetrahydro-2,3,5-triazine 7 was obtained from thiosemicarbazide. A cyclic molecule, 1,6-diphenyl-4-oxo-3,4,5,6-tetrahydro-2,3,5-triazine 4 was produced from the recrystallization of 3 in chloroform. A new macrocyclic complex 8 was isolated from the open chain 6 in the presence of iron (III) chloride hexahydrated. Compounds 1, 2 convert into the cyclic 3 heated under reflux. In addition, we have got an iron complex 5 of 1 using the compound 2 as precursor. The crystal structure of 7 was obtained by single crystal X- Ray diffraction.

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