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312488-22-5

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312488-22-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 312488-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,2,4,8 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 312488-22:
(8*3)+(7*1)+(6*2)+(5*4)+(4*8)+(3*8)+(2*2)+(1*2)=125
125 % 10 = 5
So 312488-22-5 is a valid CAS Registry Number.

312488-22-5Relevant articles and documents

Synthesis of sugar-derived isoselenocyanates, selenoureas, and selenazoles

López, óscar,Maza, Susana,Ulgar, Víctor,Maya, Inés,Fernández-Bola?os, José G.

supporting information; experimental part, p. 2556 - 2566 (2009/08/08)

Aryl, alkyl, and sugar-derived isoselenocyanates were prepared by a one-pot procedure starting from the corresponding formamides, using triphosgene as a dehydrating agent, triethylamine, and black selenium powder. The preparation of sugar selenoureas by coupling of O-protected sugar-derived isoselenocyanates with different amines, and by coupling of unprotected glycopyranosyl amines with phenyl isoselenocyanate was also accomplished. The synthesis of a glucopyranos-2-yl-selenazole starting from O-protected 2-amino-2-deoxy-d-glucose by coupling with benzoyl isoselenocyanate, Se-alkylation with phenacyl bromide, and acid-catalyzed dehydration is also reported. Unprotected N-(β-d-glucopyranosyl)-N′-phenylselenourea was transformed into a 1,2-trans-fused bicyclic isourea upon treatment with aqueous hydrogen peroxide; the same isourea was prepared by a one-pot three-step procedure from β-d-glycopyranosylamine by thiophosgenation, coupling with aniline, and HgO-mediated desulfurization.

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