페나세틴 C화학적 특성, 용도, 생산
개요
Phenacetin, a painkiller, was the world’s first synthetic pharmaceutical
drug. It was one of the first painkillers that was not
derived from opium while at the same time being absent of antiinflammatory
qualities. Phenacetinwas developed in 1878 by an
American chemist, Harmon Northrop Morse. It was introduced
into the pharmaceutical market in 1887. However, it was withdrawn
in 1983 in the United States due to unacceptable levels of
interstitial nephritis in patients and potential risks of tumorigenicity.
Like in the United States, most Western countries did not
ban phenacetin from marketing until 1983. Phenacetin is
a component of APC (aspirin-phenacetin-caffeine).
화학적 성질
Acetophenetidin is a fine, white, crystalline powder or solid. Odorless with a slightly bitter taste
용도
Analgesic, antipyretic. Component of APC tablets, analgesic mixture also containing aspirin and caffeine.
Phenacetin is reasonably anticipated to be a human carcinogen; analgesic mixtures containing Phenacetin are listed as known human carcinogens.
정의
ChEBI: Phenacetin is a member of the class of acetamides that is acetamide in which one of the hydrogens attached to the nitrogen is substituted by a 4-ethoxyphenyl group. It has a role as a non-narcotic analgesic, a peripheral nervous system drug and a cyclooxygenase 3 inhibitor. It is a member of acetamides and an aromatic ether. It is functionally related to a N-phenylacetamide, a 4-ethoxyaniline and a paracetamol.
World Health Organization (WHO)
Phenacetin, an aniline derivative, was introduced into medicine
as an antipyretic over a century ago. It subsequently gained recognition as an
analgesic and was available in many proprietary analgesic preparations. However,
in the 1940s its habitual use was first implicated as the cause of
methaemoglobinaemia and chronic haemolysis. Since 1950 there have been many
reports published indicating that abusive use is associated with cumulative renal
damage. Evidence also exists to suggest that it may have a carcinogenic potential.
The drug has been withdrawn in many countries but may remain available in others.
(Reference: (WHODI) WHO Drug Information, 1, 5, 1980)
일반 설명
Phenacetin is an odorless fine white crystalline solid with a lightly bitter taste. Used as an analgesic medicine.
공기와 물의 반응
Insoluble in water.
반응 프로필
Phenacetin react with oxidizing agents, iodine and nitrating agents.
화재위험
Flash point data for Phenacetin are not available but Phenacetin is probably combustible.
Safety Profile
Confirmed carcinogen producing tumors of the lildney and bladder. A human poison by an unspecified route. Poison by intravenous and possibly other routes. Moderately toxic by several routes. Human systemic effects by ingestion: cyanosis, liver damage, and methemoglobinemiacarboxyhemo-globinemia. Experimental teratogenic data. Other experimental reproductive effects. Mutation data reported. Chronic effects consist of weight loss, insomnia, shortness of breath, weakness, and often aplastic anemia. When heated to decomposition it emits toxic fumes of NOx,.
잠재적 노출
Phenacetin is used as an analgesic and antipyretic drug. It is used alone or in combination with aspirin and caffeine for mild to moderate muscle pain relief. Phenacetin has also been used as a stabilizer for hydrogen peroxide in hair bleaching preparations. A laboratory reagent. In veterinary medicine; it is used as an analgesic and antipyretic.
Carcinogenicity
Phenacetin is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.
환경귀착
Phenacetin occurs at room temperature as white, odorless
monoclinic prisms. It is soluble in water, alcohol, glycerol, and
acetone and is slightly soluble in benzene. It is unstable to oxidizing agents, iodine, and nitrating agents. Phenacetin has
a melting point of 134–135 °C; log Kow of 1.58; water solubility
of 30 mg l
-1 at 25 °C; and vapor pressure of 0.00316mmHg at
25 °C.
Phenacetin’s former use and production as an analgesic may
have allowed release into the environment through various
waste streams. Phenacetin exists both as vapor and as particulate
if released to air. The vapor phase is expected to be readily
degraded by reaction with photochemically produced hydroxyl
radicals with a half-life reaction of 22 h. The particular phase,
however, is removed by wet and dry deposition reactions.
Phenacetin can enter the environment through leaching into
groundwater when released into the soil with moderate
mobility. When released into the water, it does not adsorb to
suspended solids and sediment, but is expected to be inert to
reaction with naturally occurring oxidants found in water with
a half-life of more than 30 days. Phenacetin has an estimated
bioconcentration factor of less than 100, and is not expected to
significantly bioaccumulate. Volatilization is insignificant.
운송 방법
UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
Purification Methods
Crystallise it from H2O or EtOH, and its solubility in H2O is 0.08% (at ~10o) and 1.2% (at ~100o), and in EtOH it is 6.7% (at ~10o) and 36% (at ~100o). Alternatively it can be purified by solution in cold dilute alkali and re-precipitating by addition of acid to neutralisation point. Dry it in air. [Beilstein 13 H 461, 13 IV 1092.]
비 호환성
Oxidizing agents, iodine and nitrating agents.
폐기물 처리
It is inappropriate and possibly dangerous to the environment to dispose of expired or waste pharmaceuticals by flushing them down the toilet or discarding them to the trash. Household quantities of expired or waste pharmaceuticals may be mixed with wet cat litter or coffee grounds, double-bagged in plastic, discard in trash. Larger quantities shall carefully take into consideration applicable DEA, EPA, and FDA regulations. If possible, return the pharmaceutical to the manufacturer for proper disposal being careful to properly label and securely package the material. Alternatively, the waste pharmaceutical shall be labeled, securely packaged, and transported by a state licensed medical waste contractor to dispose by burial in a licensed hazardous or toxic waste landfill or incinerator. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Permanganate oxidation, microwave plasma treatment, alkaline hydrolysis or incineration.
페나세틴 준비 용품 및 원자재
원자재
준비 용품
4-ETHOXY-N-METHYLACETANILIDE
3,4-Dimethoxyphenol
Phenacetin-d3
Pyrrolo[2,3-b]indole, 5-ethoxy-1,2,3,3a,8,8a-hexahydro-1,3a,8-trimethyl-, (3aR,8aS)-rel-
Benzothiazole, 6-ethoxy-2-methyl- (7CI,8CI,9CI)
