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288402-11-9

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288402-11-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 288402-11-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,8,4,0 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 288402-11:
(8*2)+(7*8)+(6*8)+(5*4)+(4*0)+(3*2)+(2*1)+(1*1)=149
149 % 10 = 9
So 288402-11-9 is a valid CAS Registry Number.

288402-11-9Relevant articles and documents

Expeditious synthesis of cyclic isourea derivatives of β-D-glucopyranosylamine

López, óscar,Maya, Inés,Ulgar, Víctor,Robina, Inmaculada,Fuentes, José,Fernández-Bola?os, José G.

, p. 4313 - 4316 (2002)

2-(Alkylamino, dialkylamino, arylamino)tetrahydropyrano[2,3-d]oxazoles are prepared in good yield by a one-pot three-step synthesis from O-unprotected β-D-glucopyranosylamine, by its transformation into glucopyranosyl isothiocyanate in dioxane-water, coupling with amines, and reaction of the corresponding thioureas with yellow mercury(II) oxide in the same reaction medium. In the case of diethylamine prolonged reaction time during the last step, with an extra portion of yellow HgO, led to N,N-diethyl-N′-(β-D-glucopyranosyl)urea in a one-pot four-step synthesis. 2-(β-D-Glucopyranosylamino)tetrahydropyrano[2,3-d]oxazole, an analogue of trehazolin, is obtained in good yield by cyclocondensation of 1,3-bis(β-D-glucopyranosyl)thiourea.

A practical one-pot synthesis of O-unprotected glycosyl thioureas

Maya, Inés,López, óscar,Fernández-Bolaos, José G.,Robina, Inmaculada,Fuentes, José

, p. 5413 - 5416 (2001)

An expeditious and high-yielding one-pot procedure to prepare different types of O-unprotected N-β-D-glycopyranosyl, N′-substituted thioureas and di-β-D-glucopyranosyl thioureido bolaamphiphiles from β-D-glycopyranosylamines via O-unprotected glycopyranosyl isothiocyanates has been developed.

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