• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2002년도 춘계학술대회 논문집
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• pp.247-248
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• 2002

CFCs는 가정제품과 공업의 생산과정에서 발포제와 냉매제로 오랜 기간 사용되었다. 1974년, CFCs는 Molina와 Rowland에 의해서 성층권 오존의 고갈 요인으로 인식하게 되었고, 최근에는 지구 온난화의 기여물질로써 사회적 관심이 증가하였다. CFCs의 세계적인 생산은 Montreal 의정서와 그 개정안으로 인해 점차 감소하면서 사용이 폐지되었고, 대체 물질로 HCFCS와 HFCs가 사용되고 있다. 대류권에서 HCFCs와 HFCs는 hydroxyl radicals에 의해 산화되고, 최종 분해산물로 무기산, 염, HF, $CO_2$, HC와 Trifluoroacetic acid(TFA)가 생성된다. (중략)

• 약학회지
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• 제26권4호
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• pp.257-260
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• 1982

Measurement of water is a subject of continued interest. High resolution proton magnetic resonance has not been very effective in the determination of water. Especially spectral overlap with other proton signals from the sample is undesirable result. However, trifluoroacetic anhydride reacts with water and forms trifluoroacetic acid and the proton signal of trifluoroacetic acid did not overlap with that of samples. By use of this fact, water in acetone, ethyl ether, dioxane, dichloroethane and methyl isobutyl ketone is analyzed by high resolution proton magnetic resonance (PMR). This method is capable of detecting as little as 200ppm of $H_{2}O$. And it is very rapid, simple and accurate.

• 대한임상독성학회지
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• 제8권1호
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• pp.43-45
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• 2010

A 22-year-old woman was referred to our emergency department for the treatment of a chemical injury on her arm. She had accidentally spilled 99% trifluoroacetic anhydride (TFAA) over her left forearm during an organic chemistry experiment. She visited a primary care unit, and then she was referred to our hospital for inactivation of the released fluoride ions. Her skin lesions were different from those caused by hydrofluoric acid (HF) injury. The injured area showed painful whitish maculae and patchy areas with accentuated rim. No vesiculation and bulla formation was detected. We intradermally injected a 5% solution of calcium through a 24-gauge needle into the burned skin. After the injection, she complained of more severe pain. Although TFAA contains fluorine, it does not release free fluoride ions on contact with the skin, unlike HF. In fact, application of calcium gluconate for TFAA burns is not recommended. Rather, it should be avoided since it increases pain and local abscess formation.

• 분석과학
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• 제22권4호
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• pp.313-318
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• 2009

다당유도체를 기초로 하는 키랄 컬럼들을 사용하여 여러 amino alcohol의 거울상 이성질체를 산 또는 염기 등의 첨가제가 포함된 이동상에서 액체크로마토그래피로 광학분리를 수행하였다. 산 또는 염기 등의 첨가제가 각각 포함된 이동상뿐만 아니라 사용한 키랄 컬럼에 따라 광학분리된 선택성과 분리 인자가 크게 영향을 받았다. 특히 Chiralcel OD 컬럼에서 이동상에 0.1% trifluoroacetic acid를 산 첨가제로 사용했을 경우 0.1% triethylamine을 염기 첨가제로 사용했을 경우보다 머무름인자 값은 더 작게 나타났지만 광학분리의 선택성과 분리인자는 크게 증가됨을 보여주었다. 또한 Chiralcel OD 컬럼에서 이동상에 0.05% trifluoroacetic acid와 0.05% triethylamine을 함께 사용했을 때 광학분리의 선택성과 분리인자가 어느 이동상 조건보다도 가장 좋은 광학분할 결과를 보여주었다.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2001년도 추계학술대회 논문집
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• pp.331-332
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• 2001

CFCs는 가정 제품과 공업적 과정에서 발포제와 냉매제로 오랜 기간 사용되었다. 1974년, CFCs는 Molina와 Rowland에 의해 성층권 오존의 고갈 요인으로 인식되었고, 최근에는 지구 온난화의 기여물질로써 관련되어 지고 있다. CFCs의 세계적인 생산은 Montreal 의정서와 그 개정안에 의해 점차 폐지되었고, 대체 물질로 HCFCs와 HFCs가 과도하게 사용되고 있다. 수소의 존재는 대체 물질의 대류권 산화를 가능하게 했고, 대체로 성층권에 영향을 미치지 않는다. (중략)

• Bulletin of the Korean Chemical Society
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• 제22권2호
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• pp.131-132
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• 2001

• Bulletin of the Korean Chemical Society
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• 제34권9호
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• pp.2604-2608
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• 2013

An efficient synthesis of 2,2'-dipyrryl ketones has been carried out from pyrrole-2-carboxylic acids using trifluoroacetic anhydride (TFAA). Simultaneous generation of both mixed anhydride and 2-unsubstituted pyrrole, via facile decarboxylation with in-situ generated TFA, made their cross reaction (intermolecular Friedel-Crafts acylation) possible and efficient.

• Fisheries and Aquatic Sciences
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• 제24권4호
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• pp.163-170
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• 2021

Peptides are naturally occurring biological molecules that are found in all living organisms. These biologically active peptides play a key role in various biological processes. The aim of this study is the extraction and the purification of bioactive materials that induce relaxation of an apical muscle from the pyloric caeca of Patiria pectinifera. The acidified pyloric caeca extract was partially separated by the solid phase extraction using a stepwise gradient on Sep-Pak C18 cartridge. Among the fractions, materials eluted with 60% methanol/0.1% trifluoroacetic acid was put a thorough of a series of high performance liquid chromatography (HPLC) steps to isolate a neuropeptide with relaxation activity. The purified compound was eluted at 28% acetonitrile in 0.1% trifluoroacetic acid with retention time of 25.8 min on the CAPCELL-PAK C18 reversed-phase column. To determine the molecular weight and the amino acid sequence of the purified peptide, LC-MS and Edman degradation method were used, respectively. The primary structure of the peptide was determined to be FGMGGAYDPLSAGFTD which corresponded to the amino acid sequence of a starfish myorelaxant peptide (SMP) isotype (SMPb) found in the cDNA sequence encoding SMPa and its isotypes. In this study, a muscle relaxant neuropeptide (SMPb) has been isolated from pyloric caeca of starfish P. pectinifera. This is the first report of SMPb isolation on the protein level from P. pectinifera.

• Bulletin of the Korean Chemical Society
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• 제20권12호
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• pp.1433-1436
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• 1999

The 2-(2,4-dimethoxyphenyl)-4-MDO (2) underwent polymerization with ring opening as well as cyclization reaction in the presence of various cationic catalysts such as boron trifluoride, trifluoromethanesulfonic acid, p-toluenesulfonic acid, hydrochloric acid and trifluoroacetic acid. They afforded a mixture of the ring-opened poly(keto ether) and 3(2H)-dihydrofuranone derivative. Both the methylene group and oxygen atom of 1,3-dioxolane ring were participated in the reaction with cationic catalyst. The contents of the polymer and cyclization product were variable according to the acid strength of the cationic catalysts.

• Bulletin of the Korean Chemical Society
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• 제13권4호
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• pp.357.1-357.1
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• 1992