C4895
Cephalexin hydrate
first-generation cephalosporin antibiotic
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关于此项目
经验公式（希尔记法）:
C16H17N3O4S · xH2O
化学文摘社编号:
分子量:
347.39 (anhydrous basis)
PubChem Substance ID:
UNSPSC Code:
51282503
NACRES:
NA.85
EC Number:
239-773-6
MDL number:
Beilstein/REAXYS Number:
965503
Quality Segment
form
powder
pKa
5.2, 7.3
antibiotic activity spectrum
Gram-negative bacteria, Gram-positive bacteria
mode of action
cell wall synthesis | interferes
storage temp.
2-8°C
SMILES string
S1C2N(C(=C(C1)C)C(=O)O)C(=O)[C@H]2NC(=O)[C@H](N)c3ccccc3.O
InChI
1S/C16H17N3O4S.H2O/c1-8-7-24-15-11(14(21)19(15)12(8)16(22)23)18-13(20)10(17)9-5-3-2-4-6-9;/h2-6,10-11,15H,7,17H2,1H3,(H,18,20)(H,22,23);1H2/t10-,11-,15?;/m1./s1
InChI key
AVGYWQBCYZHHPN-FNOHQHCYSA-N
General description
Chemical structure: β-lactam
Application
Cephalexin is a cephalosporin antibiotic used to study the effect of expression, binding, and inhibition of PBP3 and other penicillin-binding proteins (PBPs) on bacterial cell wall mucopeptide synthesis.
Biochem/physiol Actions
Cephalexin disrupts the synthesis of the peptidoglycan layer of bacterial cell walls which is responsible for cell wall structural integrity. Peptidoglycan synthesis is facilitated by transpeptidases known as penicillin-binding proteins (PBPs). PBPs bind to the D-Ala-D-Ala at the end of muropeptides (peptidoglycan precursors) to crosslink the peptidoglycan. Cephalexin antibiotics mimic the D-Ala-D-Ala site, thereby competitively inhibiting PBP crosslinking of peptidoglycan.
Other Notes
Storage of this product should be in airtight containers and protected from light.
signalword
Danger
hcodes
Hazard Classifications
Resp. Sens. 1 - Skin Sens. 1
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves