D-Cycloserine

D-Cycloserine 구조식 이미지
카스 번호:
68-41-7
상품명:
D-Cycloserine
동의어(영문):
CYCLOSERINE;D-4-AMINO-3-ISOXAZOLIDINONE;SEROMYCIN;Cycloserin;pa94;NJ-21;PA 94;106-7;I-1431;D-CycL
CBNumber:
CB9138759
분자식:
C3H6N2O2
포뮬러 무게:
102.09
MOL 파일:
68-41-7.mol
MSDS 파일:
SDS

D-Cycloserine 속성

녹는점
147 °C (dec.)(lit.)
알파
111 º (C=5, 2N NaOH)
끓는 점
191.38°C (rough estimate)
밀도
1.3516 (rough estimate)
굴절률
1.5110 (estimate)
저장 조건
Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
용해도
물: 용해성50mg/mL, 투명, 무색~연황색
물리적 상태
가루
산도 계수 (pKa)
pKa 4.5 (Uncertain)
색상
흰색에서 황백색까지
optical activity
[α]20/D +115.0±5.0°, c = 2% in H2O
수용성
녹는
감도
Air Sensitive
Merck
14,2751
BRN
80798
BCS Class
3/1
안정성
제공된 대로 구매일로부터 2년 동안 안정적입니다. 증류수 용액은 -20°C에서 최대 1개월 동안 보관할 수 있습니다.
CAS 데이터베이스
68-41-7(CAS DataBase Reference)
NIST
Cycloserine(68-41-7)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn
위험 카페고리 넘버 5-20
안전지침서 38-36/37-24/25
WGK 독일 2
RTECS 번호 NY2975000
F 고인화성물질 10-23
HS 번호 29419090
유해 물질 데이터 68-41-7(Hazardous Substances Data)
기존화학 물질 KE-01429
그림문자(GHS): GHS hazard pictograms
신호 어: Warning
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 GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고 GHS hazard pictograms
예방조치문구:
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P271 옥외 또는 환기가 잘 되는 곳에서만 취급하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
NFPA 704
1
1 1

D-Cycloserine MSDS


D-Cycloserine

D-Cycloserine C화학적 특성, 용도, 생산

화학적 성질

White to pale yellow cryst. powder

용도

D-Cycloserine inhibits cell wall biosynthesis (D-Ala peptide bond formation). D-Cycloserine also prevents conversion of D-Ala to L-Ala. D-Cycloserine is an bacteriostatic. D-Cycloserine is an antibiot ic against Gram-negative bacteria.

Indications

Cycloserine is a broad-spectrum antibiotic produced by Streptomyces orchidaceus. It is structural analogue of Dalanine and acts through a competitive inhibition of the D-alanine that is involved in bacterial cell wall synthesis. Cycloserine is inhibitory to M. tuberculosis and active against Escherichia coli, S. aureus, and Enterococcus, Nocardia, and Chlamydia spp. It is used in the treatment of MDR tuberculosis and is useful in renal tuberculosis, since most of the drug is excreted unchanged in the urine.

일반 설명

Chemical structure: amino acid derivatives

Mechanism of action

D-Cycloserine is considered to be the active form of the drug, having its action associated with the ability to inhibit two key enzymes, D-alanine racemase and D-alanine ligase. D-Alanine is an important component of the peptidoglycan portion of the mycobacterial cell wall. Mycobacterium are capable of utilizing natural occurring L-alanine and converting the L-alanine to D-alanine via the enzyme D-alanine racemase. The resulting D-alanine is coupled with itself to form a D-alanine–D-alanine complex under the influence of D-alanine ligase, and this complex is incorporated into the peptidoglycan of the mycobacterial cell wall . D-Cycloserine is a rigid analogue of D-alanine; therefore, it competitively inhibits the binding of D-alanine to both of these enzymes and its incorporation into the peptidoglycan. Resistance is associated with an over expression of D-alanine racemase.

Pharmacology

Cycloserine is readily absorbed orally and distributes throughout body fluids including the cerebrospinal fluid. The concentrations of cycloserine in tissues, body fluids, and the cerebrospinal fluid are approximately equal to the plasma level. Cycloserine is partially metabolized, and 60 to 80% is excreted unchanged by the kidney.

Clinical Use

D-(+)-4-Amino-3-isoxazolidinone (Seromycin) is an antibioticthat has been isolated from the fermentation beer of threedifferent Streptomyces species: S. orchidaceus, S. garyphalus,and S. lavendulus. It occurs as a white to pale yellow crystallinematerial that is very soluble in water. It is stable in alkaline,but unstable in acidic, solutions. The compoundslowly dimerizes to 2,5-bis(aminoxymethyl)-3,6-diketopiperazinein solution or standing.
The structure of cycloserine was reported simultaneouslyby Kuehl et al. and Hidy et al.81 to be D-( +)-4-amino-3-isoxazolidinone. It has been synthesized byStammer et al. and by Smart et al.83 Cycloserine is stereochemicallyrelated to D-serine. However, the L-form hassimilar antibiotic activity.
Although cycloserine exhibits antibiotic activity invitro against a wide spectrum of both Gram-negative andGram-positive organisms, its relatively weak potency andfrequent toxic reactions limit its use to the treatment of tuberculosis.It is recommended for patients who fail to respondto other tuberculostatic drugs or who are known tobe infected with organisms resistant to other agents. It isusually administered orally in combination with otherdrugs, commonly isoniazid.

부작용

Cycloserine is readily absorbed after oral administration and is widely distributed, including the CNS. Unfortunately, D-cycloserine binds to neuronal N-methylasparate receptors and, in addition, affects synthesis and metabolism of γ-aminobutyric acid, leading to complex series of CNS effects. As a second-line agent, cycloserine should only be used when retreatment is necessary or when the organism is resistant to other drugs. Cycloserine should not be used as a single drug; it must be used in combination.

Purification Methods

Purify cycloserine by recrystallisation from aqueous EtOH or MeOH or aqueous NH3/EtOH or isoPrOH. Also recrystallise it from aqueous ammoniacal solution at pH 10.5 (100mg/mL) by diluting with 5 volumes of isopropanol and then adjusting to pH 6 with acetic acid. An aqueous solution, buffered to pH 10 with Na2CO3, can be stored in a refrigerator for 1week without decomposition. UV: max at 226nm (A1cm 1% 4.02). The tartrate salt has m 165-166o (dec), 166-168o (dec), and [] D 24 -41o (c 0.7, H2O). [Stammer et al. J Am Chem Soc 79 3236 1959, UV: Kuehl J Am Chem Soc 77 2344 1955, Beilstein 27 III/IV 5549.]

D-Cycloserine 준비 용품 및 원자재

원자재

준비 용품


D-Cycloserine 공급 업체

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