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51787-80-5

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51787-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51787-80-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,7,8 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 51787-80:
(7*5)+(6*1)+(5*7)+(4*8)+(3*7)+(2*8)+(1*0)=145
145 % 10 = 5
So 51787-80-5 is a valid CAS Registry Number.

51787-80-5Relevant articles and documents

Agents Acting on CNS: Part XXX - Synthesis of 2-Substituted 1,2,3,4,6,7,12,12a-Octahydropyrazinopyrido-indoles

Dhaon, Madhup K.,Kumar, Naresh,Agarwal, Shiv K.,Saxena, Anil K.,Jain, Padam C.,Anand, Nitya

, p. 882 - 885 (2007/10/02)

A number of 2-substituted pyrazinopyridoindoles (3,6-12) have been prepared by the condensation of 1,2,3,4,6,7,12,12a-octahydropyrazinopyridoindole (1) with appropriate halogen compounds.Treatment of 1 with ethylene oxide gives 4 which on condensation with p-fluorobenzoyl chloride yields 5.The corresponding 2-γ-(p-fluorobenzoyl)propyl-6-oxo-octahydropyrazinopyridoindole (14) is prepared by the oxidation of 1 with mercuric acetate followed by condensation of the resulting 6-oxo derivative (13) with γ-chloro-p-fluorobutyrophenone. 1-Oxo-2-substituted-pyrazinopyridoindoles (16-18) are prepared by the reaction of ethylene oxide on methyl 1,2,3,4-tetrahydropyridoindole-3-carboxylate followed by condensation of the resulting oxazino derivative (15) with amines.These compounds show tranquillizing, anti-inflammatory and diuretic activities.

Neurotropic and psychotropic agents. LXVII. 1 [4,4 bis(4 fluorophenyl)butyl] 4 hydroxy 4 (3 trifluoromethyl 4 chlorophenyl)piperidine and related compounds: new synthetic approaches

Sindelar,Rajsner,Cervena,et al.

, p. 3879 - 3901 (2007/10/04)

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