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1338333-23-5

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1338333-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338333-23-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,3,3 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1338333-23:
(9*1)+(8*3)+(7*3)+(6*8)+(5*3)+(4*3)+(3*3)+(2*2)+(1*3)=145
145 % 10 = 5
So 1338333-23-5 is a valid CAS Registry Number.

1338333-23-5Relevant articles and documents

Access to 2,3-diaryl-4-nitrothiochroman S,S-dioxides from 3-nitrobenzo[bthiophene

Bianchi, Lara,MacCagno, Massimo,Petrillo, Giovanni,Rizzato, Egon,Sancassan, Fernando,Spinelli, Domenico,Tavani, Cinzia

, p. 8160 - 8169 (2011/10/30)

The base-induced cyclization of (E)-2-aryl-1-[2-(benzylsulfonyl)phenyl-1- nitroethenes to polysubstituted thiochroman S,S-dioxides exhibits a diastereoselectivity that can be oriented towards a selected isomer by means of appropriate adjustments of the experimental conditions. The interest of such a result also rests on the promising pharmacological activity of the products, whose structure encompasses different well-acknowledged pharmacophores. A conformational 1H NMR investigation, backed by molecular-mechanics calculations, has also been accomplished.

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