Cas 1258664-34-4,C16H16FN3O4

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Check Digit Verification of cas no

The CAS Registry Mumber 1258664-34-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,8,6,6 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1258664-34:
(9*1)+(8*2)+(7*5)+(6*8)+(5*6)+(4*6)+(3*4)+(2*3)+(1*4)=184
184 % 10 = 4
So 1258664-34-4 is a valid CAS Registry Number.

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1258664-34-4Relevant academic research and scientific papers

Synthesis of alkyl hexahydropyrazino-[1,2-c]pyrimidine-9-carboxylates

Vovk,Kushnir,Mel'Nichenko,Tsymbal

experimental part, p. 989 - 995 (2012/03/11)

Cyclocondensation of 3-alkoxycarbonylmethylidenepiperazin-2-ones with α-chlorobenzyl isocyanates gave alkyl 8-aryl-1,6-dioxo-1,3,4,6,7,8- hexahydro-2H-pyrazino[1,2-c]pyrimidine-9-carboxylates. The use of 1-aryl-2,2,2-trifluoroethyl isocyanates in an analogous cyclization gave 6-aryl-1,8-dioxo-6-trifluoromethyl-1,3,4,6,7,8-hexahydro-2H-pyrazino[1,2-c] pyrimidine-9-carboxylates.

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