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p-아미노안식향산에틸에스테르

p-아미노안식향산에틸에스테르
p-아미노안식향산에틸에스테르 구조식 이미지
카스 번호:
94-09-7
한글명:
p-아미노안식향산에틸에스테르
동의어(한글):
벤조카인;p-아미노안식향산에틸에스테르;에틸파바
상품명:
Benzocaine
동의어(영문):
Solu H;Norcain;Ora-jel;NSC 4688;Ethoform;Norcaine;Topcaine;ORTHESIN;Euphagin;Anaesthin
CBNumber:
CB1217951
분자식:
C9H11NO2
포뮬러 무게:
165.19
MOL 파일:
94-09-7.mol

p-아미노안식향산에틸에스테르 속성

녹는점
88-90 °C
끓는 점
172 °C (12.7517 mmHg)
밀도
1.17
굴절률
1.5600 (estimate)
인화점
172°C/13mm
저장 조건
2-8°C
용해도
alcohol: soluble1 gm in 5 ml
물리적 상태
Crystalline Powder
산도 계수 (pKa)
2.5(at 25℃)
색상
White
수용성
Soluble in ethanol, chloroform, ethyl ether and dilute acids. Sparingly soluble in water
Merck
14,1086
BRN
638434
안정성
Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey
BLFLLBZGZJTVJG-UHFFFAOYSA-N
CAS 데이터베이스
94-09-7(CAS DataBase Reference)
NIST
Benzoic acid, 4-amino-, ethyl ester(94-09-7)
EPA
Benzocaine (94-09-7)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi,T,F
위험 카페고리 넘버 43-36/37/38-39/23/24/25-23/24/25-11
안전지침서 22-24/25-37/39-26-24-45-36/37-16-7
유엔번호(UN No.) 3077
WGK 독일 2
RTECS 번호 DG2450000
TSCA Yes
위험 등급 9
포장분류 III
HS 번호 29224995
유해 물질 데이터 94-09-7(Hazardous Substances Data)
독성 LD50 oral in rat: 3042mg/kg
기존화학 물질 KE-01203
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H317 알레르기성 피부 반응을 일으킬 수 있음 피부 과민성 물질 구분 1 경고 P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H370 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴(노출되어도 특정 표적장기 독성을 일으키지 않는다는 결정적인 노출경로가 있다면 노출경로를 기재) 특정 표적장기 독성 - 1회 노출 구분 1 위험 P260, P264, P270, P307+P311, P321,P405, P501
H372 장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴 특정 표적장기 독성 - 반복 노출 구분 1 위험 P260, P264, P270, P314, P501
H411 장기적 영향에 의해 수생생물에 유독함 수생 환경유해성 물질 - 만성 구분 2
예방조치문구:
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P272 작업장 밖으로 오염된 의복을 반출하지 마시오.
P273 환경으로 배출하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P321 (…) 처치를 하시오.
P391 누출물을 모으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P307+P311 노출된 경우,독성 물질 센터 또는 의사에게 전화하기
P333+P313 피부자극성 또는 홍반이 나타나면 의학적인 조치·조언를 구하시오.
P405 밀봉하여 저장하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.

p-아미노안식향산에틸에스테르 MSDS


Benzocaine

p-아미노안식향산에틸에스테르 C화학적 특성, 용도, 생산

개요

Benzocaine (ethyl p-aminobenzoate) is used topically by itself or in combination with menthol or phenol in nonprescription dosage forms such as gels, creams, ointments, lotions, aerosols, and lozenges to relieve pain or irritation caused by such conditions as sunburn, insect bites, toothache, teething, cold sores or canker sores in or around the mouth, and fever blisters. Benzocaine is a lipophilic local anesthetic agent with a short duration of action.
Like most amino ester-type local anesthetics, it is easily hydrolyzed by plasma cholinesterase. Because of its low pKa, however, it is un-ionized under most physiological conditions and, therefore, can only bind to the lipid side of the local anesthetic receptor. It also can easily cross membranes into systemic circulation to cause systemic toxicities. Furthermore, being a PABA derivative, it has similar allergenic properties to procaine and is contraindicated with sulfonamide antibacterial agents.

화학적 성질

white odourless crystals

용도

Benzocaine is used as an anesthetic (local).

용도

Local and topical anesthetic used in products such as burn and sunburn remedies, hemorrhoidal creams, suppositories, creams for treatment of poison ivy, oral and gingival products, sore-throat sprays/lozenges, astringents, appetite suppressants, callus and wart remedies, athlete's-foot remedies, toothache- and denture-irritation products.

용도

Apply to a maximum of three to four times a day to the affected area, as directed by the physician.

상표명

Americaine (Fisons); Baby Anbesol (Whitehall-Robins).

Biological Functions

Benzocaine is a PABA derivative used primarily for topical application to skin and mucous membranes. Its low aqueous solubility allows it to stay at the site of application for long periods. Its minimal rate of absorption after topical administration is associated with a low incidence of systemic toxicity. Benzocaine is contraindicated in patients with known sensitivity to ester-linked anesthetics or PABA-containing compounds.

Synthesis Reference(s)

Journal of the American Chemical Society, 71, p. 4154, 1949 DOI: 10.1021/ja01180a513
Chemical and Pharmaceutical Bulletin, 29, p. 1443, 1981 DOI: 10.1248/cpb.29.1443

일반 설명

Benzocaine is a unique local anesthetic because it does notcontain a tertiary amine. The pKa of the aromatic amine is 3.5ensuring that benzocaine is uncharged at physiological pH.Because it is uncharged, it is not water soluble but is ideal fortopical applications. The onset of action is within 30 secondsand the duration of drug action is 10 to 15 minutes.

Clinical Use

Benzocaine is used for endoscopy, bronchoscopy, and topicalanesthesia. Benzocaine is available as a 20% solution topicalspray, in a 1% gel for mucous membrane application, and a14% glycerin suspension for topical use in the outer ear.Toxicity to benzocaine can occur when the topical doseexceeds 200 to 300 mg resulting in methemoglobinemia.Infants and children are more susceptible to this and methemoglobinemiahas been reported after benzocaine lubricationof endotracheal tubes and after topical administration to treata painful diaper rash.

Safety Profile

Poison by ingestion and intraperitoneal routes. Human systemic effects by rectal route: methemoglobinemia/carboxyhemoglobinem ia in infants. A skin irritant and a mild sensitizer. Local contact may cause contact dermatitis. Used as a topical anesthetic and as a sun-screening agent. When heated to decomposition it emits highly toxic fumes of NOx. See also ETHYL ALCOHOL and ESTERS

Chemical Synthesis

Benzocaine is the ethyl ester of 4-aminobenzoic acid (2.3.1). The classic, optimal way of benzocaine synthesis is the reduction of the nitro group of the ethyl ester of 4-nitrobenzoic acid to benzocaine by hydrogen, which generates directly in the reaction medium by the reaction of iron filings with dilute acids [24–26].

Purification Methods

Crystallise Benzocaine from EtOH/H2O or EtOH (m 93-94o), and dry it in air. [Beilstein 14 H 422, 14 IV 1129.]

Structure and conformation

Ethyl aminobenzoate, a para-aminobenzoate derivative (PABA)

p-아미노안식향산에틸에스테르 준비 용품 및 원자재

원자재

준비 용품


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