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87568-43-2

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87568-43-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87568-43-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,5,6 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87568-43:
(7*8)+(6*7)+(5*5)+(4*6)+(3*8)+(2*4)+(1*3)=182
182 % 10 = 2
So 87568-43-2 is a valid CAS Registry Number.

87568-43-2Relevant articles and documents

Chemo-enzymatic synthesis of chiral 3-hydroxy-azetidin-2-ones

Bari,Madan,Sethi

, p. 10 - 17 (2007/10/03)

n-Tributyltin hydride reduction of 3-acetoxy-4,4-bis(alkylthio)- azetidin-2-ones 4a and 4b produces 4-unsubstituted azetidinone 5 and 4- alkylthio-azetidin-2-one 9 respectively. Azetidin-2,3-diones 8,11,13 which can be conveniently prepared by basic hydro

Synthesis of β-lactam antibiotics by the sulfeno-cycloamination

Ihara,Haga,Yonekura,et al.

, p. 7345 - 7352 (2007/10/02)

A novel efficient beta -lactam synthesis was achieved by two successive processes (sulfeno-cycloamination), addition of phenysulfenyl chloride to alpha , beta -unsaturated amides followed by base treatment. Key synthetic intermediates of monobactams and nocardicin derivatives were obtained via this method. construction of the 1-carbapenam ring system by the sulfenocycloamination is also described.

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