Meropenem (SM 7338)

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Meropenem (SM 7338)
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Cat #: V2218 CAS #: 96036-03-2 Purity ≥ 98%

Description: Meropenem (formerly known as SM-7338; SM7338; ICI194660; Vabomere; Merrem), a beta-lactam of the carbapenem class, is an ultra-broad-spectrum injectable β-lactam antibiotic used to treat a wide variety of infections. Meropenem has been shown to inhibit penicillinase-negative, -positive and methicillin-susceptible staphylococci. Meropenem has an antibacterial spectrum which is broadly similar to that of imipenem but, whilst slightly less active against staphylococci and enterococci, it is more active against Pseudomonas aeruginosa, all Enterobacteriaceae and Haemophilus influenzae. Meropenem demonstrates antagonism with several other beta-lactams against strains producing Type I cephalosporinases.

References: [1]. L Slaney, et al. In-vitro activity of meropenem against Neisseria gonorrhoeae, Haemophilus influenzae and H. ducreyi from Canada and Kenya. J Antimicrob Chemother. 1989 Sep;24 Suppl A:183-6.

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Molecular Weight (MW)383.46
Molecular FormulaC17H25N3O5S
CAS No.96036-03-2
Storage-20℃ for 3 years in powder formr
-80℃ for 2 years in solvent
Solubility In VitroDMSO: 76 mg/mL (198.2 mM)r
Water: 8 mg/mL (20.9 mM)r
Ethanol: <1 mg/mL
SMILES CodeO=C(C(N12)=C(S[C@@H]3CN[C@H](C(N(C)C)=O)C3)[C@H](C)[C@]2([H])[C@@H]([C@H](O)C)C1=O)O
SynonymsSM-7338; ICI-194660; SM 7338; ICI 194660; SM7338; ICI194660; Vabomere.
ProtocolIn VitroIn vitro activity: Meropenem has an antibacterial spectrum which is broadly similar to that of imipenem but, whilst slightly less active against staphylococci and enterococci, it is more active against Pseudomonas aeruginosa, all Enterobacteriaceae and Haemophilus influenzae. Meropenem is two- to four-fold more active than imipenem against Gram-negative organisms and its spectrum of antimicrobial activity is wider than those of all other drugs tested. Meropenem MICs are not significantly influenced by high inocula and the drug is generally bactericidal. Meropenem demonstrates antagonism with several other beta-lactams against strains producing Type I cephalosporinases. Meropenem binds most strongly to penicillin-binding protein 2 of Escherichia coli and Pseudomonas aeruginosa, and to penicillin-binding proteins 1 of Staphylococcus aureus. Meropenem is a new carbapenem antibiotic which differs chemically from imipenem/cilastatin by having a 1-beta-methyl substitution, providing it with excellent intrinsic stability to human renal dehydropeptidase-I. Meropenem has one identified metabolite, a beta-lactam ring-opened form which is devoid of microbiological activity. Kinase Assay: Meropenem (SM 7338), a new parenteral carbapenem demonstrated increased activity as compared to imipenem against 336 strains of Neisseria gonorrhoeae, 119 strains of Haemophilus influenzae, and 110 strains of H. Ceftriaxone and ciprofloxacin demonstrated activity superior to that of both carbapenems while the activity of ceftazidime was similar to that of Meropenem (SM 7338). Cell Assay: The meropenem MICs for penicillin-resistant Streptococcus pneumoniae were higher than for the penicillin-susceptible strains but the organisms remained susceptible. Clinical susceptibility in vitro to meropenem was defined by MICs of ≤ 4 mg/L, intermediate susceptibility by MICs of 8 mg/L and MICs of ≥ 16 mg/L define resistance; equivalent figures for zones of growth inhibition were ≥ 14 (susceptible), 12-13 (intermediate) and ≤ 11 (resistant) mm[1].Meropenem was 2- to 4-fold more active than imipenem against Gram-negative organisms and its spectrum of antimicrobial activity was wider than those of all other drugs tested.Meropenem inhibited all anaerobic bacteria at less than or equal to 8 mg/l and 0.25 mg/l inhibited 50% of strains. Meropenem MICs were not significantly influenced by high inocula and the drug was generally bactericidal.Meropenem bound most strongly to penicillin-binding protein 2 of Escherichia coli and Pseudomonas aeruginosa, and to penicillin-binding proteins 1 of Staphylococcus aureus. Meropenem had one identified metabolite, a β-lactam ring-opened form which is devoid of microbiological activity.
In VivoMeropenem significantly increases the plamsa total clearance of valproate to about 1.5 times the control (6.09 mL/min/kg vs. 4.28 mL/min/kg) in rabbits. Meropenem significantly increases the urinary excretion of valproate- glucuronide in rabbits.
Animal modelIn rabbits, meropenem significantly increased the plamsa total clearance of valproate to about 1.5 times compared to the control (6.09 mL/min/kg vs. 4.28 mL/min/kg). Meropenem significantly increased the urinary excretion of valproate- glucuronide in rabbits.
Dosages60 mg/kg
AdministrationIntraperitoneal injection; once
These protocols are for reference only. InvivoChem does not independently validate these methods.
Preparing Stock Solutions
Solvent volume to be added Mass (the weight of a compound)
Mother liquor concentration 1mg5mg10mg20mg
1mM2.6078 mL13.0392 mL26.0783 mL52.1567 mL
5mM0.5216 mL2.6078 mL5.2157 mL10.4313 mL
10mM0.2608 mL1.3039 mL2.6078 mL5.2157 mL
20mM0.1304 mL0.6520 mL1.3039 mL2.6078 mL
Quality Control Documentation
The molarity calculator equation
Mass(g) = Concentration(mol/L) × Volume(L) × Molecular Weight(g/mol)
Mass
=
Concentration
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Volume
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Molecular Weight*
The dilution calculator equation
Concentration(start) × Volume(start) = Concentration(final) × Volume(final)

This equation is commonly abbreviated as: C1 V1 = C2 V2

Concentration(start)
C1
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=
Concentration(final)
C2
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Volume(final)
V2
Step One: Enter information below
Dosage mg/kg Average weight of animals g Dosing volume per animal µL Number of animals
Step Two: Enter the in vivo formulation
%DMSO + % + %Tween 80 + %ddH2O

Calculation Results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in µL DMSO(Master liquid concentration mg/mL) ,Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation: Take µL DMSO master liquid, next add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH2O,mix and clarify.
Note:
  • (1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
  • (2) Be sure to add the solvent(s) in order.