Brilacidin (Synonyms: PMX 30063)

Cat. No.: HY-19892: FAQs
Data Sheet SDS COA Handling Instructions

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Brilacidin (PMX 30063) is an anti-infective antimicrobial with MIC90s of 1 and 8 μg/mL for Gram-positive bacteria Streptococcus pneumonia and Streptococcus viridans, and MIC90 of 8 and 4 μg/mL for Gram-negative bacteria Haemophilus influenza and Pseudomonas aeruginosa. Brilacidin is a defensin mimetic antibiotic compound.

At equivalent molar concentrations, both the salt and free forms of a compound exhibit comparable biological activity. Nevertheless, the salt form (Brilacidin tetrahydrochloride) usually boasts enhanced water solubility and stability.

For research use only. We do not sell to patients.

Brilacidin Chemical Structure

CAS No. : 1224095-98-0

Size	Price	Stock
1 mg	USD 300	Ask For Quote & Lead Time
5 mg	USD 620	Ask For Quote & Lead Time
10 mg	USD 980	Ask For Quote & Lead Time

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This product is a controlled substance and not for sale in your territory.

Other Forms of Brilacidin:

Brilacidin tetrahydrochloride Get quote

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Biological Activity
Protocol
Purity & Documentation
References
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Description

In Vitro

Both Staphylococcus aureus (SA) and Staphylococcus epidermidis (SE) have the lowest minimum inhibitory concentrations among the bacterial groups. The MIC₉₀s to Brilacidin for Streptococcus pneumonia (SP), Streptococcus viridians (SV), Moraxella (MS), Haemophilus influenza (HI), Pseudomonas aeruginosa (PA), and Serratia marcescens (SM) are 4, 32, 256, 32, 16, and 128-fold higher, respectively, than SA and SE. Brilacidin has Gram-positive in vitro activity; topical Brilacidin 0.5% is minimally irritating; and Brilacidin 0.5% was equally efficacious as Vancomycin (VAN) in a methicillin-resistant S. aureus (MRSA) keratitis model when the corneal epithelium is removed. Brilacidin acts primarily on the bacterial cell membrane by depolarization. Brilacidin is more potent for Gram-positive bacteria (except SV) than Gram-negative bacteria^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

Brilacidin demonstrates dose-dependent ocular toxicity after 7 topical instillations (every 30 min for 3 h) in the NZW rabbit ocular toxicity model. Brilacidin 1% is determined to be Mildly Irritating (23.0), Brilacidin 0.5% (6.5), and Brilacidin 0.25% (4.0) are determined to be Minimally Irritating, while Brilacidin 0.1% (2.0) and TBS (1.0) are determined to be Practically Nonirritating and 0.01% Brilacidin (0.5) is determined to be Nonirritating based on their Maximum mean total scores (MMTS) values^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial

Molecular Weight

936.91

Formula

C₄₀H₅₀F₆N₁₄O₆

CAS No.

1224095-98-0

Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C(C1=NC=NC(C(NC2=CC(C(F)(F)F)=CC(NC(CCCCNC(N)=N)=O)=C2O[C@H]3CNCC3)=O)=C1)NC4=CC(C(F)(F)F)=CC(NC(CCCCNC(N)=N)=O)=C4O[C@H]5CNCC5

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

Purity & Documentation

Purity: 92.54%

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Data Sheet (272 KB) SDS (251 KB)

COA (245 KB) HNMR (261 KB) LCMS (367 KB)

Handling Instructions (2659 KB)

References

[1]. Bruk Mensa , et al. Comparative Mechanistic Studies of Brilacidin, Daptomycin, and the Antimicrobial Peptide LL16. Antimicrob Agents Chemother. 2014 Sep;58(9):5136-45. [Content Brief]

[2]. Regis P Kowalski, et al. An Independent Evaluation of a Novel Peptide Mimetic, Brilacidin (PMX30063), for Ocular Anti-infective. J Ocul Pharmacol Ther. Jan-Feb 2016;32(1):23-7. [Content Brief]

Cell Assay ^[1]	All susceptibility testing is performed by adding 90 μL of bacterial inoculum to 10 μL of 10× serial concentrations of Brilacidin into rows of a 96-well polypropylene plate. Each plate can test 8 bacterial isolates with each row containing a positive growth control and 11 serial dilutions. The diluent of Brilacidin contains 0.01% acetic acid and 0.2% bovine serum albumin. Polypropylene tubes, pipettes, and pipette tips are used to avoid binding of Brilacidin. A 1% stock of Brilacidin is diluted to 1,280 μg/mL and this is serially diluted 2-fold for 10 times to provide testing concentrations. PA and SM are tested starting at 128 μg/mL and ending at 1.25 μg/mL. All other bacteria are tested starting at 64 μg/mL and ending at 0.625 μg/mL. MICs are determined visually by locating the lowest concentration of Brilacidin that inhibits visible bacterial growth (pellet formation). The MICs are tabulated for each bacterial group and reported as MIC₅₀, MIC₉₀, and a range from the lowest to highest MIC^[2]. MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration ^[2]	Rabbits^[2] Ocular toxicity was evaluated with 5 concentrations (1%, 0.5%, 0.25%, 0.1%, and 0.01%) of Brilacidin, formulated in Tris-buffered saline (TBS) using the Draize scoring system in the NZW rabbit ocular irritation model. The Draize Scale grades for toxicity to: cornea (opacity-degree of density, area involved), iris, and conjunctiva (redness, chemosis, and discharge). Two rabbits are tested for each Brilacidin concentration and TBS (vehicle control). Rabbits are treated in both eyes with (37 μL) topical drops every 30 min for 3 h (7 total doses). Rabbits are evaluated in a masked fashion for ocular toxicity. Ocular toxicity is evaluated using the Draize scoring system after treatment on day 0 for acute toxicity and on day 4 post treatment for any delayed toxicity. Maximum mean total scores (MMTS) are calculated and eye irritation is classified. MCE has not independently confirmed the accuracy of these methods. They are for reference only.
References	[1]. Bruk Mensa , et al. Comparative Mechanistic Studies of Brilacidin, Daptomycin, and the Antimicrobial Peptide LL16. Antimicrob Agents Chemother. 2014 Sep;58(9):5136-45. [Content Brief] [2]. Regis P Kowalski, et al. An Independent Evaluation of a Novel Peptide Mimetic, Brilacidin (PMX30063), for Ocular Anti-infective. J Ocul Pharmacol Ther. Jan-Feb 2016;32(1):23-7. [Content Brief]

Brilacidin Related Classifications

Infection

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Help & FAQs

Do most proteins show cross-species activity?
Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Brilacidin1224095-98-0PMX 30063PMX30063PMX-30063BacterialAntibioticInhibitorinhibitorinhibit

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