Cl-amidine hydrochloride

Name: Cl-amidine hydrochloride
Brand: MedChemExpress
SKU: HY-100574A
Rating: 5.0 (22 reviews)

Cat. No.: HY-100574A Purity: 99.82%: Data Sheet
COA

SDS
Handling Instructions
FAQs
Technical Support

Cl-amidine hydrochloride is an orally active peptidylarginine deminase (PAD) inhibitor, with IC₅₀ values of 0.8 μM, 6.2 μM and 5.9 μM for PAD1, PAD3, and PAD4, respectively. Cl-amidine hydrochloride induces apoptosis in cancer cells. Cl-amidine hydrochloride induces microRNA (miR)-16 (miRNA-16, microRNA-16) expression and causes cell cycle arrest. Cl-Amidine hydrochloride prevents histone 3 citrullination and neutrophil extracellular trap formation, and improves survival in a murine sepsis model.

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

CAS No. : 1373232-26-8

Size	Stock	Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO ready for reconstitution	In-stock	Estimated Time of Arrival: December 31
Solution
10 mM * 1 mL in DMSO	In-stock	Estimated Time of Arrival: December 31
Solid
1 mg	In-stock	Estimated Time of Arrival: December 31
5 mg	In-stock	Estimated Time of Arrival: December 31
10 mg	In-stock	Estimated Time of Arrival: December 31
25 mg	In-stock	Estimated Time of Arrival: December 31
50 mg	In-stock	Estimated Time of Arrival: December 31
100 mg	In-stock	Estimated Time of Arrival: December 31
200 mg	Get quote
500 mg	Get quote

or Bulk Inquiry

* Please select Quantity before adding items.

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

Customer Review

Based on 22 publication(s) in Google Scholar

Other Forms of Cl-amidine hydrochloride:

D-Cl-amidine hydrochloride In-stock
Cl-amidine TFA In-stock
D-Cl-amidine Get quote
Cl-amidine Get quote

22 Publications Citing Use of MCE Cl-amidine hydrochloride

Bio/Physico-chemical Assay

Cell Proliferation/Viability Assay

IHC

In Vivo Efficacy Study

: Cl-amidine hydrochloride purchased from MedChemExpress. Usage Cited in: Exp Mol Med. 2024 Dec;56(12):2602-2616. [Abstract]; NET-DNA levels produced by RA neutrophils pretreated with 10 μM DPI, 10 μM Cl-Amidine or 20 μM sivelestat for 1 h prior to stimulation with 100 ng/mL IL-33 or 40 nM PMA for 4 h.

: Cl-amidine hydrochloride purchased from MedChemExpress. Usage Cited in: J Hazard Mater. 2025 Jan 16:487:137257. [Abstract]; In the co-culture, inhibiting NET formation (treated with 200 μM Cl-amidine for 15 min) downregulated the HIF-1αpathway and upregulated p-mTOR, while stimulating NETs (treated with 100 nM PMA for 3 h) had the opposite effect.

: Cl-amidine hydrochloride purchased from MedChemExpress. Usage Cited in: MedComm (2020). 2025 Jan 30;6(2):e70084. [Abstract]; Inhibition of OMV release with Cl-amidine, a protein arginine deiminase inhibitor, significantly reversed the reinforcing effect of lactate-adjusted low-pH conditions on the P. aeruginosa LL-37 resistance

: Cl-amidine hydrochloride purchased from MedChemExpress. Usage Cited in: Free Radic Biol Med. 2024 Sep 12:S0891-5849(24)00656-7. [Abstract]; GA mice were pretreated with DNase I or Cl-Amidine (a PAD4 inhibitor). Elevated NETs (marked with histone H3 and MPO) in GA mice were significantly reduced after treatment with DNase I or Cl-Amidine (50 mg/kg, ip).

: Cl-amidine hydrochloride purchased from MedChemExpress. Usage Cited in: Free Radic Biol Med. 2024 Sep 12:S0891-5849(24)00656-7. [Abstract]; Based on the analysis of the ankle swelling index, the swelling index was significantly increased in the MSU group when compared with the control group. DNase I or Cl-Amidine (50 mg/kg, ip) treatment significantly reduced the swelling index in GA mice.

Featured Recommendations

•Related Screening Libraries:

•Related Small Molecules:

•Related Proteins:

Biological Activity
Purity & Documentation
References
Customer Review

Description

IC₅₀ & Target

IC50: 0.8 μM (PAD1), 5.9 μM (PAD4), 6.2 μM (PAD3)^[1]^[5].

In Vitro

Cl-amidine is a bioavailable haloacetamidine-based compound that inhibits all the active PAD isozymes with near equal potency (k_inact/K_I=13,000 M_-1 min-1 for PAD4)^[1].
Cl-amidine (0, 5, 10, 15, 20, 25, 50 μg/mL, 24 hours) induces apoptosis in TK6 lymphoblastoid cells and HT29 colon cancer cells in a dose-dependent manner. Interestingly, the colon cancer cell line (HT29) is relatively resistant to apoptosis caused by Cl-amidine^[2].
Cl-Amidine prevents histone 3 citrullination and neutrophil extracellular trap formation, and improves survival in a murine sepsis model^[4].

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

Apoptosis Analysis^[2].

Cell Line:	TK6 lymphoblastoid cells and HT29 colon cancer cells.
Concentration:	0, 5, 10, 15, 20, 25, 50 μg/mL.
Incubation Time:	24 h.
Result:	Induced apoptosis dose-dependently.

In Vivo

Cl-amidine (75 mg/kg, ip once daily) suppresses and treats DSS-induced colitis in mice^[2].
Cl-amidine (5, 25, 75 mg/kg, oral gavage, once daily) leads to significant reductions in the histology scores dose-dependently^[2].

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

Animal Model:	C57BL/6 mice (8-12 wk old, DSS mouse model of colitis)^[2].
Dosage:	75 mg/kg.
Administration:	IP once daily.
Result:	Suppressed PAD activity, protein citrullination, and PAD levels in the colon in vivo.

Animal Model:	C57BL/6 mice (8-12 wk old, DSS mouse model of colitis)^[2].
Dosage:	5, 25, 75 mg/kg.
Administration:	Oral gavage once daily.
Result:	Led to significant reductions in the histology scores.

Molecular Weight

347.24

Formula

C₁₄H₂₀Cl₂N₄O₂

CAS No.

1373232-26-8

Appearance

Solid

Color

White to light yellow

SMILES

O=C(N[C@H](C(N)=O)CCCNC(CCl)=N)C1=CC=CC=C1.[H]Cl

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

-20°C, stored under nitrogen, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen, away from moisture)

Solvent & Solubility

In Vitro:

DMSO : 50 mg/mL (143.99 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions

Concentration Solvent Mass	1 mg	5 mg	10 mg

1 mM	2.8799 mL	14.3993 mL	28.7985 mL
5 mM	0.5760 mL	2.8799 mL	5.7597 mL
10 mM	0.2880 mL	1.4399 mL	2.8799 mL

View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (stored under nitrogen, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Molarity Calculator
Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

Concentration _(start)

Volume _(start)

Concentration _(final)

Volume _(final)

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 1.25 mg/mL (3.60 mM); Clear solution

This protocol yields a clear solution of ≥ 1.25 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (12.5 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Protocol 2

Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 1.25 mg/mL (3.60 mM); Clear solution

This protocol yields a clear solution of ≥ 1.25 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (12.5 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil
Solubility: ≥ 1.25 mg/mL (3.60 mM); Clear solution

This protocol yields a clear solution of ≥ 1.25 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (12.5 mg/mL) to 900 μL Corn oil, and mix evenly.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: PBS
Solubility: 5.5 mg/mL (15.84 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

DMSO +

Tween-80 +

Saline

Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.

The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).

Calculation results:

Working solution concentration: mg/mL

Method for preparing stock solution: mg drug dissolved in μL DMSO (Stock solution concentration: mg/mL).

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen, away from moisture)

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).

Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.

If the continuous dosing period exceeds half a month, please choose this protocol carefully.

Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.

Purity & Documentation

Purity: 99.82%

Select Batch:

Data Sheet (278 KB) SDS (394 KB)

COA (246 KB) HNMR (425 KB) RP-HPLC (259 KB) LCMS (104 KB)

Handling Instructions (2659 KB)

References

[1]. Yuan Luo, et al. Inhibitors and Inactivators of Protein Arginine Deiminase 4: Functional and Structural Characterization. Biochemistry. 2006 Oct 3; 45(39): 11727–11736. [Content Brief]

[2]. Chumanevich AA, et al. Suppression of colitis in mice by Cl-amidine: a novel peptidylarginine deiminase inhibitor. Am J Physiol Gastrointest Liver Physiol. 2011 Jun;300(6):G929-38. [Content Brief]

[3]. Witalison EE, et al. Molecular targeting of protein arginine deiminases to suppress colitis and prevent colon cancer. Oncotarget. 2015 Nov 3;6(34):36053-62. [Content Brief]

[4]. Biron BM, et al., Cl-Amidine Prevents Histone 3 Citrullination and Neutrophil Extracellular Trap Formation, and Improves Survival in a Murine Sepsis Model. J Innate Immun. 2017;9(1):22-32. [Content Brief]

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg

DMSO	1 mM	2.8799 mL	14.3993 mL	28.7985 mL	71.9963 mL
	5 mM	0.5760 mL	2.8799 mL	5.7597 mL	14.3993 mL
	10 mM	0.2880 mL	1.4399 mL	2.8799 mL	7.1996 mL
	15 mM	0.1920 mL	0.9600 mL	1.9199 mL	4.7998 mL
	20 mM	0.1440 mL	0.7200 mL	1.4399 mL	3.5998 mL
	25 mM	0.1152 mL	0.5760 mL	1.1519 mL	2.8799 mL
	30 mM	0.0960 mL	0.4800 mL	0.9600 mL	2.3999 mL
	40 mM	0.0720 mL	0.3600 mL	0.7200 mL	1.7999 mL
	50 mM	0.0576 mL	0.2880 mL	0.5760 mL	1.4399 mL
	60 mM	0.0480 mL	0.2400 mL	0.4800 mL	1.1999 mL
	80 mM	0.0360 mL	0.1800 mL	0.3600 mL	0.9000 mL
	100 mM	0.0288 mL	0.1440 mL	0.2880 mL	0.7200 mL