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93733-50-7

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93733-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93733-50-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,7,3 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 93733-50:
(7*9)+(6*3)+(5*7)+(4*3)+(3*3)+(2*5)+(1*0)=147
147 % 10 = 7
So 93733-50-7 is a valid CAS Registry Number.

93733-50-7Relevant articles and documents

Use of Hypervalent Iodine in the Synthesis of Isomeric Dihydrooxazoles

Carlucci, Claudia,Tota, Arianna,Colella, Marco,Ronamazzi, Giuseppe,Clarkson, Guy J.,Luisi, Renzo,Degennaro, Leonardo

, p. 428 - 436 (2018/06/11)

[Figure not available: see fulltext.] A convenient synthesis of 2- and/or 3-oxazolines has been developed depending on the structure and stereochemistry of the starting amino alcohol. PhI(OAc)2 acted as oxidant on the intermediate imine, as sup

Synthesis of β-lactams from acetic acids and imines induced by phenyl dichlorophosphate reagent

Arrieta,Cossio,Palomo

, p. 1703 - 1712 (2007/10/02)

The development of a practical method for the preparation of vinylamino-β-lactams from Dane salts and Schiff bases is described. Among the reagents known to produce β-lactams from imines and acetic acids, only phenyl dichlorophosphate and 1-methyl-2-chloropyridinium iodide are suitable for the synthesis of vinylamino-β-lactams. Reaction of acetic acids with ethanolimine derivatives promoted by phenyl dichlorophosphate affords oxazolidines instead of β-lactams. Protection of the hydroxyl group as the trimethylsilyl ether in the starting Schiff bases provides a convenient route to the corresponding β-lactams instead of oxazolidines. Some observations on the scope of the method are made.

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