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138450-73-4

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138450-73-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138450-73-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,5 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138450-73:
(8*1)+(7*3)+(6*8)+(5*4)+(4*5)+(3*0)+(2*7)+(1*3)=134
134 % 10 = 4
So 138450-73-4 is a valid CAS Registry Number.

138450-73-4Relevant articles and documents

Synthesis and oral activity of pivaloyloxymethyl 7-[(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido]-3(Z)-(4-methylt hiazol-5-yl)vinyl-3-cephem-4 carboxylate (ME1207) and its related compound

Sakagami,Atsumi,Yamamoto,Tamura,Yoshida,Nishihata,Fukatsu

, p. 2433 - 2436 (2007/10/02)

7-[2-(2-Aminothiazol-4-yl)-2(Z)-methoxyiminoacetamido]-3(Z)-(4-methylth iazol-5-yl)vinyl-3-cephem-4-carboxylic acid (11, ME1206) and its 3-trans isomer (13) were prepared to test antibacterial activity. These compounds exhibited excellent antibacterial activity against both gram-positive and gram-negative bacteria, including β-lactamase producing strains. The pivaloyloxymethyl esters (12 and 14) of the compounds (11 and 13) were prepared by esterification with pivaloyloxymethyl iodide. Among them, pivaloyloxymethyl 7-[(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido]-3(Z)-(4-methylt hiazol-5-yl)vinyl-3-cephem-4-carboxylate (12, ME1207) showed good urinary recovery after oral administration in mice.

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