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2-methyl-terephthaloyl dichloride, also known as 2-methyl-1,4-benzenedicarboxylic acid dichloride, is an organic compound with the chemical formula C9H6Cl2O4. It is a colorless to pale yellow crystalline solid that is soluble in organic solvents. 2-methyl-terephthaloyl dichloride is an important intermediate in the production of polyester resins and fibers, particularly in the synthesis of polyethylene terephthalate (PET). It is synthesized by reacting 2-methyl-terephthalic acid with a chlorinating agent, such as phosphorus pentachloride or thionyl chloride, to form the dichloride derivative. 2-methyl-terephthaloyl dichloride is used in the polymerization process to create high-quality polyester products with improved properties, such as increased resistance to heat and chemicals. Due to its reactivity and potential health hazards, it is essential to handle this chemical with proper safety measures and precautions.

3217-44-5

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3217-44-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3217-44-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,1 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3217-44:
(6*3)+(5*2)+(4*1)+(3*7)+(2*4)+(1*4)=65
65 % 10 = 5
So 3217-44-5 is a valid CAS Registry Number.

3217-44-5Relevant academic research and scientific papers

Identification and Structure-Activity Relationships of Novel Compounds that Potentiate the Activities of Antibiotics in Escherichia coli

Haynes, Keith M.,Abdali, Narges,Jhawar, Varsha,Zgurskaya, Helen I.,Parks, Jerry M.,Green, Adam T.,Baudry, Jerome,Rybenkov, Valentin V.,Smith, Jeremy C.,Walker, John K.

, p. 6205 - 6219 (2017/08/02)

In Gram-negative bacteria, efflux pumps are able to prevent effective cellular concentrations from being achieved for a number of antibiotics. Small molecule adjuvants that act as efflux pump inhibitors (EPIs) have the potential to reinvigorate existing antibiotics that are currently ineffective due to efflux mechanisms. Through a combination of rigorous experimental screening and in silico virtual screening, we recently identified novel classes of EPIs that interact with the membrane fusion protein AcrA, a critical component of the AcrAB-TolC efflux pump in Escherichia coli. Herein, we present initial optimization efforts and structure-activity relationships around one of those previously described hits, NSC 60339 (1). From these efforts we identified two compounds, SLUPP-225 (17h) and SLUPP-417 (17o), which demonstrate favorable properties as potential EPIs in E. coli cells including the ability to penetrate the outer membrane, improved inhibition of efflux relative to 1, and potentiation of the activity of novobiocin and erythromycin.

DIMERIC COMPOUNDS

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Page/Page column 51, (2014/07/07)

Disclosed are compounds of Formula (I), or pharmaceutically acceptable salts thereof, wherein Z, X, Q and R1 are as described in this application, and methods of using the compounds in the treatment of cancer.

Polyesters of poly(oxyalkylene) hydroxyaromatic ethers

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, (2008/06/13)

Poly(oxyalkylene) hydroxyaromatic ethers having the formula: STR1 or a fuel-soluble salt thereof; where n is an integer from 5 to 100; x is an integer from 0 to 10; R1 and R2 are each independently hydrogen, hydroxy, lower alkyl havi

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