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(2S,4R,5R)-3,3-Dimethyl-4,7-dioxo-6-[1-phenyl-meth-(E)-ylidene]-4λ4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid tert-butyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

667888-91-7

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667888-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 667888-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,8 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 667888-91:
(8*6)+(7*6)+(6*7)+(5*8)+(4*8)+(3*8)+(2*9)+(1*1)=247
247 % 10 = 7
So 667888-91-7 is a valid CAS Registry Number.

667888-91-7Downstream Products

667888-91-7Relevant academic research and scientific papers

Synthesis of antitumor 6-alkylidenepenicillanate sulfones and related 3-alkylidene-2-azetidinones

Veinberg, Grigory,Shestakova, Irina,Vorona, Maxim,Kanepe, Iveta,Lukevics, Edmunds

, p. 147 - 150 (2004)

6-Alkylidenepenicillanate sulfoxides and sulfones were synthesized on the base of 6-oxopenicillanate esters. The targeted splitting of their thiazolidine ring led to the formation of 3-alkylidene substituted 4-heteryldithio and 4-methylsulfonyl azetidin-2-ones. Some of mono and bicyclic β-lactams revealed potent cytotoxic properties towards monolayer tumor cells in 10-μM concentrations.

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