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4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[[(2R)-aminophenylacetyl]amino]-3,3- dimethyl-7-oxo-,(2S,5R,6R)-,mono(3-hydroxy-4-methoxybenzenesulfonate) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57421-55-3

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57421-55-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57421-55-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,2 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57421-55:
(7*5)+(6*7)+(5*4)+(4*2)+(3*1)+(2*5)+(1*5)=123
123 % 10 = 3
So 57421-55-3 is a valid CAS Registry Number.

57421-55-3Downstream Products

57421-55-3Relevant academic research and scientific papers

Microbiologic and pharmacologic properties of a new ampicillin derivative: ampicillin guaiacolsulfonate

Valcavi,Caponi,Monterosso,Balzano,Palmira,Favalli,Chiari,Rozza

, p. 1695 - 1697 (2007/11/07)

Ampicillin guaiacolsulfonate, a new derivative of ampicillin, preserves the antibacterial properties of ampicillin, is suitable for injection owing to its good water solubility and it has far higher stability in dry state than has sodium ampicillin. Ampicillin guaiacolsulfonate is better orally absorbed in rabbit than is ampicillin. In vitro experiments carried out with the model system by Rosano and Schulman, and measurements of the intestinal absorption in the everted sac jejunal preparation, carried out with 14C labelled compounds, demonstrate that the new ampicillin derivative is better absorbed by the intestine because of an increase in the intestinal permeability of the molecule itself.

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