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T3258

Sigma-Aldrich

四环素

98.0-102.0% (HPLC)

同義詞:

Tetracycline Hydrate

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About This Item

經驗公式(希爾表示法):
C22H24N2O8 · xH2O
CAS號碼:
分子量::
444.43 (anhydrous basis)
Beilstein:
2230417
EC號碼:
MDL號碼:
分類程式碼代碼:
51284017
PubChem物質ID:
NACRES:
NA.85
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品質等級

化驗

98.0-102.0% (HPLC)

形狀

powder or crystals

儲存條件

(Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place.)

顏色

faint yellow to dark yellow

抗生素活性譜

Gram-negative bacteria
Gram-positive bacteria

作用方式

protein synthesis | interferes

儲存溫度

2-8°C

SMILES 字串

CN(C)[C@H]1[C@@H]2C[C@H]3C(=C(O)[C@]2(O)C(=O)C(C(N)=O)=C1O)C(=O)c4c(O)cccc4[C@@]3(C)O

InChI

1S/C22H24N2O8/c1-21(31)8-5-4-6-11(25)12(8)16(26)13-9(21)7-10-15(24(2)3)17(27)14(20(23)30)19(29)22(10,32)18(13)28/h4-6,9-10,15,25,27-28,31-32H,7H2,1-3H3,(H2,23,30)/t9-,10-,15-,21+,22-/m0/s1

InChI 密鑰

OFVLGDICTFRJMM-WESIUVDSSA-N

基因資訊

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一般說明

Chemical structure: tetracycline

生化/生理作用

作用机制:四环素通过细胞膜中的 proin 通道被动扩散,与 30S 核糖体结合,并通过阻止氨酰基 tRNA 进入 mRNA-核糖体复合物上的受体位点来抑制蛋白质合成。它也与细菌的 50S 核糖体亚基结合,改变膜并导致细胞内成分从细菌细胞中泄漏。通过洗涤可以逆转抑制作用,这表明起到抗菌作用的是可逆结合的抗生素,而不是不可逆结合的药物。

耐药性机制:这种作用通过细胞壁通透性的丧失而失活。

抗菌谱:包括对革兰氏阳性和革兰氏阴性细菌的广泛抗菌活性。

其他說明

Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place

訊號詞

Warning

危險聲明

危險分類

Acute Tox. 4 Oral - Aquatic Chronic 2 - Repr. 2

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves


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分析證明 (COA)

Lot/Batch Number

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Maulik Thaker et al.
Cellular and molecular life sciences : CMLS, 67(3), 419-431 (2009-10-29)
Resistance to tetracycline emerged soon after its discovery six decades ago. Extensive clinical and non-clinical uses of this class of antibiotic over the years have combined to select for a large number of resistant determinants, collectively termed the tetracycline resistome.
Lucia Pallecchi et al.
Antimicrobial agents and chemotherapy, 51(8), 2720-2725 (2007-06-06)
A survey carried out in 2005 among members of a healthy population of children living in Bolivia and Peru revealed that fecal carriage of Escherichia coli strains resistant to expanded-spectrum cephalosporins was remarkably increased compared to that observed in the
Jennifer M Adams-Haduch et al.
Antimicrobial agents and chemotherapy, 52(11), 3837-3843 (2008-08-30)
A total of 49 unique clinical isolates of multidrug-resistant (MDR) Acinetobacter baumannii identified at a tertiary medical center in Pittsburgh, Pennsylvania, between August 2006 and September 2007 were studied for the genetic basis of their MDR phenotype. Approximately half of
Amélie Carrër et al.
Antimicrobial agents and chemotherapy, 52(8), 2950-2954 (2008-06-04)
The first outbreak of carbapenem-resistant Klebsiella pneumoniae isolates producing the plasmid-encoded carbapenem-hydrolyzing oxacillinase OXA-48 is reported. The 39 isolates belonged to two different clones and were collected at the University Hospital of Istanbul, Turkey, from May 2006 to February 2007
Vanessa G Allen et al.
Antimicrobial agents and chemotherapy, 55(2), 703-712 (2010-11-26)
Surveillance of gonococcal antimicrobial resistance and the molecular characterization of the mechanisms underlying these resistance phenotypes are essential in order to establish correct empirical therapies, as well as to describe the emergence of new mechanisms in local bacterial populations. To

Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. How do I prepare a stock solution of T3258 Tetracycline? What is it soluble in?

    1 answer
    1. This product is soluble in methanol or ethanol, giving a completely clear solution at up to 30 mg/ml. The stability of this material in solution is pH-dependent. Stock solutions prepared in ethanol are estimated to be stable for 1-3 months when aliquoted and stored at -20°C. Please see the link below to review the product datasheet which also lists the solubility in 1 M HCl. Note that the potency is reduced in solutions with a pH below 2. https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/406/734/t3258dat.pdf

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