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25393-56-0

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25393-56-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25393-56-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,3,9 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 25393-56:
(7*2)+(6*5)+(5*3)+(4*9)+(3*3)+(2*5)+(1*6)=120
120 % 10 = 0
So 25393-56-0 is a valid CAS Registry Number.

25393-56-0Downstream Products

25393-56-0Relevant articles and documents

Formation of N-Tributylstannyl Heterocycle from Bis(tributyltin) Oxide and ω-Haloalkyl Isocyanate. One-Pot Convenient Synthesis of 2-Oxazolidinones and Tetrahydro-2H-1,3-oxazin-2-one

Shibata, Ikuya,Nakamura, Kenji,Baba, Akio,Matsuda, Haruo

, p. 853 - 859 (1989)

Novel types of compounds, N-tributylstannyl-2-oxazolidinone (4a) and tetrahydro-2H-1,3-oxazin-2-one (4b), are formed from the adduct of (n-Bu3Sn)2O (1) with ω-haloalkyl isocyanate (2), and the subsequent coupling reaction with alkyl halides gives a variety of N-substituted 2-oxazolidinones and tetrahydro-2-oxazinones in a one-pot procedure.Both the cyclization and the coupling reaction proceed quantitatively in the presence of HMPA which enhances the reactivity of the Sn-heteroatom bond by coordination.

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