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22628-31-5

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22628-31-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22628-31-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,2 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22628-31:
(7*2)+(6*2)+(5*6)+(4*2)+(3*8)+(2*3)+(1*1)=95
95 % 10 = 5
So 22628-31-5 is a valid CAS Registry Number.

22628-31-5Relevant articles and documents

Highly trans-selective synthesis of β-lactams by tandem phenoxide anion-catalyzed Mannich-type addition and cyclization

Takahashi, Eiki,Fujisawa, Hidehiko,Yanai, Toshiharu,Mukaiyama, Teruaki

, p. 994 - 995 (2005)

Highly trans-selective synthesis of β-lactams by tandem Lewis base-catalyzed Mannich-type addition and cyclization was established; that is, reaction of benzylideneanilines and trimethylsilyl enolates derived from S-ethyl thioates proceeded smoothly to af

Stereodefined homopropargyl amines by tandem nucleophilic addition/fragmentation of dihydropyridone triflates

Tummatorn, Jumreang,Dudley, Gregory B.

, p. 158 - 160 (2011/03/20)

Dihydropyridone (DHPD) triflates undergo nucleophile-triggered fragmentation to provide homopropargyl amine derivatives, the stereochemistry of which is defined by starting from readily available β-amino esters.

The synthesis of β-lactams via a one-pot Reformatsky reaction of imines promoted by Zn/Cp2TiCl2 (cat.)

Chen, Lei,Zhao, Gang,Ding, Yu

, p. 2611 - 2614 (2007/10/03)

In the presence of Zn/Cp2TiCl2 (cat.) α-bromoacetates, γ-bromocrotonates or α-bromomethylacrylates react with imines in one-pot to form β-lactams, 3-vinyl-β-lactams or α-methylene-γ-lactams, respectively, at room temperature without

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