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56167-90-9

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56167-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56167-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,1,6 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 56167-90:
(7*5)+(6*6)+(5*1)+(4*6)+(3*7)+(2*9)+(1*0)=139
139 % 10 = 9
So 56167-90-9 is a valid CAS Registry Number.

56167-90-9Relevant articles and documents

Certain 7-acylamido-3-(2-carboxyalkyl-2,3-dihydro-s-triazolo[4,3-b]pyridazin-3-on-6-ylmethyl)-3-cephem-4-carboxylic acids their salts and easily hydrolyzed esters

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, (2008/06/13)

Certain 7-acylamido-3-(2-carboxyalkyl-2,3-dihydro-s-triazolo[4,3-b]pyridazin-3-on-6-ylthiomethyl)-3-cephem-4-carboxylic acids and their salts and easily hydrolyzed esters of the 4-carboxyl group were synthesized and found to be potent antibacterial agents which exhibited good aqueous solubility. A preferred embodiment was 7-[o-(methylaminomethyl)phenylacetamido]-3-(2-carboxyalkyl-2,3-dihydro-s-triazolo[4,3-b]pyridazin-3-on-6-ylthiomethyl)-3-cephem-4-carboxylic acid.

Δ2,3 -0-2-Isocephem-4-carboxylic acid and derivatives as antibacterial agents

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, (2008/06/13)

There is described the stereoselective total synthesis of novel Δ2,3 -1,4-morpholine-2-carboxylic acids possessing a fused β-lactam ring in the 1,6-position and carrying a substituent cis to carbon 5 in the 7-position of the fused ring system r

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