N-Propargylglycine

Name: N-Propargylglycine
Brand: MedChemExpress
SKU: HY-142035
Rating: 4.5 (1 reviews)

Cat. No.: HY-142035 Purity: 99.70%: Data Sheet
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N-Propargylglycine is a brain-penetrant and orally active PRODH inhibitor. N-Propargylglycine covalently modifies enzyme-bound FAD and active site lysine, causing enzyme structural distortion, protein decay, and irreversible inhibition of proline and 4-hydroxyproline catabolism. N-Propargylglycine induces UPRmt, upregulates mitochondrial chaperones and YME1L1, enhances mitochondrial proteostasis, blocks astrocytic L-proline consumption, and abolishes L-proline’s ATP-maintaining and viability-protective effects. N-Propargylglycine stimulates neural processes, increases brain proline, hydroxyproline, and sarcosine levels, partially normalizes Huntington’s disease whole brain transcriptomes. N-Propargylglycine reduces hyperoxaluria, prevents calcium oxalate stone formation, reduces kidney tubular damage, and restores weight and survival in Grhpr knockout mice. N-Propargylglycine can be used for the research of breast cancer, neurodegenerative disorders, Huntington’s disease, and primary hyperoxaluria type 2.

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

N-Propargylglycine Chemical Structure

CAS No. : 58160-95-5

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Customer Review

Based on 1 publication(s) in Google Scholar

1 Publications Citing Use of MCE N-Propargylglycine

•Neurochem Res. 2025 Nov 26;51(1):1. [Abstract]

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Biological Activity
Purity & Documentation
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Description

In Vitro

N-Propargylglycine (5 mM; 6 min/48 h) irreversibly inhibits proline oxidation and NADH formation in mitochondria from ZR-75-1 human breast cancer cells at a concentration of 5 mM, with persistent inhibition observed 48 h after pretreatment of cultured cells^[1].
N-Propargylglycine (5 mM; 24-48 h) induces rapid decay of mitochondrial PRODH protein and upregulates expression of mitochondrial chaperones GRP-75, HSP-60, and the protease YME1L1 in ZR-75-1 human breast cancer cells after 24 h and 48 h of treatment, consistent with activation of the mitochondrial unfolded protein response^[1].
N-propargylglycine (0.01-5 mM; 8 h) potently inhibits L-proline consumption in cultured primary rat astrocytes, with half-maximal inhibition at 0.2 mM and greater than 80% inhibition at 1 mM after 8 h of incubation^[2].
N-Propargylglycine (5 mM; 48 h) reduces mitochondrial HYPDH/PRODH2 expression levels to ~40% of control, promoting mitochondrial degradation of the enzyme^[4].

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

Immunofluorescence^[1]

Cell Line:	ZR-75-1 human breast cancer cells
Concentration:	5 mM
Incubation Time:	24 h; 48 h
Result:	Showed significant loss of mitochondrial PRODH protein, with concurrent upregulation of mitochondrial GRP-75 and no change in mitochondrial TOM20 levels. Decreased PRODH levels to 0.6-fold of control, increased GRP-75 levels to 2.2-fold of control, and increased HSP-60 levels to 1.3-fold of control in mitochondrial fractions. Decreased PRODH levels to 0.75-fold of control, increased 60 kDa YME1L1 levels to 1.34-fold of control, and increased 80 kDa YME1L1 levels to 1.38-fold of control in whole-cell lysates (24 h treatment). Decreased PRODH levels to 0.58-fold of control, maintained 60 kDa YME1L1 levels at 1.35-fold of control, and returned 80 kDa YME1L1 levels to 1.08-fold of control in whole-cell lysates (48 h treatment).

Western Blot Analysis^[4]

Cell Line:	Human hepatocarcinoma HepG2 cells
Concentration:	5 mM
Incubation Time:	48 h
Result:	Reduced mitochondrial HYPDH/PRODH2 expression levels to ~40% of untreated control levels. Left non-specific bands in the cytoplasmic fraction insensitive to treatment.

In Vivo

N-Propargylglycine (N-PPG) (50-200 mg/kg; p.o.; daily; 9 days) crosses the blood-brain barrier in Mus musculus, induces a dose-dependent reduction in brain PRODH protein expression, upregulates markers of the mitochondrial unfolded protein response, and significantly stimulates neural pathways without causing overt toxicity^[1].
N-Propargylglycine (N-PPG) (50 mg/kg; oral gavage; daily; 9 days) induces brain mitohormesis in WT mice, reducing Prodh protein levels by ~30% and altering brain transcriptomic and kidney metabolomic profiles^[3].
N-Propargylglycine (N-PPG) (50 mg/kg; oral gavage; daily; 9 days) induces brain mitohormesis and partially normalizes transcriptomic profiles in R6/2 HD mice^[3].
N-Propargylglycine (N-PPG) (50 mg/kg; oral gavage; daily; 14 days) is well-tolerated in R6/2 HD mice and increases tissue levels of proline, hydroxyproline, and sarcosine without altering disease progression or lifespan^[3].
N-Propargylglycine (200 mg/kg; p.o.; daily; 5 days) reduces mouse liver Hypdh/Prodh2 and Prodh1 protein levels to 73% and 66% of control levels, respectively^[4].
N-Propargylglycine (50 mg/kg; p.o.; daily; 9 days) significantly elevates kidney 4-hydroxyproline and proline levels in both wild-type and Huntington's disease model mice, with fold increases ranging from 1.42 to 4.57 relative to controls^[4].
N-Propargylglycine (50 mg/kg; p.o.; daily; 14 days) significantly elevates blood 4-hydroxyproline levels 3.59-fold, and brain 4-hydroxyproline and proline levels 2.72-fold and 2.57-fold, respectively, in Huntington's disease model mice^[4].
N-Propargylglycine (200 mg/kg; p.o.; daily; 21 days) reduces urinary oxalate excretion by ~32% after 3 weeks, prevents Ca²⁺Ox crystal formation, restores weight gain, and preserves kidney function in Grhpr knockout mice with Primary Hyperoxaluria Type 2^[5].
N-Propargylglycine (200 mg/kg; p.o.; daily; up to 24 weeks) fully restores survival to wild-type levels, suppresses hyperoxaluria long-term, prevents Ca²⁺Ox stone formation, and preserves kidney function and body weight in Grhpr knockout mice with Primary Hyperoxaluria Type 2 over 24 weeks^[5].

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

Animal Model:	Mixed B6/CBA background (5-week-old; male and female)^[1]
Dosage:	50-200 mg/kg
Administration:	p.o.; daily; 9 days
Result:	Reduced mean brain PRODH protein expression. Upregulated HSP-60 transcripts 1.68-fold and YME1L1 transcripts 1.35-fold relative to housekeeping genes (single 200 mg/kg treated mouse). Increased median YME1L1 transcript levels by 18.5% (50 mg/kg, not statistically significant) and mean brain YME1L1 protein expression by 30-40%. Identified 1324 differentially expressed genes, with 841 genes upregulated via RNAseq analysis. Confirmed significant enrichment (FDR) of 77 Gene Ontology pathways and 7 Reactome neural pathways, including glutaminergic and GABAergic synapses, nervous system development, and voltage-gated ion channel pathways. Upregulated neural genes 1.64-fold (Htr3a), 1.72-fold (Itpr1), 1.48-fold (Syt6), and 2.00-fold (Pcsk2) relative to GAPDH via RTqPCR validation.

Animal Model:	R6/2 (male, ~4 weeks at receipt, Huntington's disease transgenic model expressing N-terminal human mutant HTT with ~150 CAG repeats)^[3]
Dosage:	50 mg/kg
Administration:	oral gavage; daily; 9 days
Result:	Induced brain mitohormesis with nominal (insignificant) declines in Prodh protein levels and increased expression of Yme1l1 protease and chaperone Grp78. Partially normalized HD whole brain transcriptomes toward WT profiles, with a strong linear Pearson correlation between control WT/HD gene ratios and N-PPG treated/control HD gene ratios. Upregulated average tyrosine hydroxylase (Th) mRNA levels to 40% of control WT levels, dopamine receptor-1 (Drd1) to 44%, and adenosine A2A receptor (Adora2a) to 32% of control WT levels. Increased kidney proline levels 1.4-fold, hydroxyproline 2.8-fold, and sarcosine 1.9-fold compared to vehicle control.

Animal Model:	C57BL/6J (4-month-old, male and female; Grhpr knockout, fed 1% hydroxyproline diet)^[5]
Dosage:	200 mg/kg
Administration:	p.o.; daily; 21 days
Result:	Reduced urinary oxalate excretion by 31% after 9 days and 32% after 22 days compared to vehicle controls. Reversed weight loss and induced weight gain, while vehicle controls continued to lose weight. Increased hepatic hydroxyproline levels ~20-fold and proline levels ~10-fold compared to vehicle controls. Significantly reduced liver glyoxylate levels compared to vehicle controls. Reduced renal tubule calcium oxalate crystals by nearly 100-fold (fewer and smaller) compared to vehicle controls. Drastically reduced urine kidney injury molecule-1 (KIM-1) levels and significantly lowered plasma Cystatin C levels compared to vehicle controls. Showed minimal KIM-1 staining in kidney tissue, indistinguishable from wild-type mice.

Molecular Weight

113.11

Formula

C₅H₇NO₂

CAS No.

58160-95-5

Appearance

Solid

Color

Off-white to light yellow

SMILES

O=C(O)CNCC#C

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Store at room temperature, keep dry and cool

In solvent	-80°C	1 year
	-20°C	6 months

Solvent & Solubility

In Vitro:

H₂O : ≥ 100 mg/mL (884.10 mM)

DMSO : 8.33 mg/mL (73.65 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)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions

Concentration Solvent Mass	1 mg	5 mg	10 mg

1 mM	8.8410 mL	44.2048 mL	88.4095 mL
5 mM	1.7682 mL	8.8410 mL	17.6819 mL
10 mM	0.8841 mL	4.4205 mL	8.8410 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, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Working solution concentration: mg/mL

This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.

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).

Purity & Documentation

Purity: 99.70%

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Data Sheet (283 KB) SDS (393 KB)

COA (243 KB) HNMR (271 KB) RP-HPLC (243 KB) MS (80 KB)

Handling Instructions (2659 KB)

References

[1]. Scott GK, et al. N-Propargylglycine: a unique suicide inhibitor of proline dehydrogenase with anticancer activity and brain-enhancing mitohormesis properties. Amino Acids. 2021;53(12):1927-1939. [Content Brief]

[2]. Spellerberg P, et al. Consumption of L-Proline as Energy Substrate by Cultured Primary Rat Astrocytes. Neurochem Res. 2025;51(1):1. Published 2025 Nov 26. [Content Brief]

[3]. Teramayi F, et al. Brain transcriptomic, metabolic and mitohormesis properties associated with N-propargylglycine treatment: A prevention strategy against neurodegeneration. Brain Res. 2024;1826:148733. [Content Brief]

[4]. Bons J, et al. Therapeutic targeting of HYPDH/PRODH2 with N-propargylglycine offers a Hyperoxaluria treatment opportunity. Biochim Biophys Acta Mol Basis Dis. 2024;1870(1):166848. [Content Brief]

[5]. Hady M, et al. N-Propargylglycine Restores Survival by Preventing Calcium Oxalate Stone Formation, Tubular Injury, and Kidney Dysfunction in a Lethal Mouse Model of Primary Hyperoxaluria Type 2. Kidney Int. Published online March 20, 2026. [Content Brief]

Complete Stock Solution Preparation Table

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

DMSO / H₂O	1 mM	8.8410 mL	44.2048 mL	88.4095 mL	221.0238 mL
	5 mM	1.7682 mL	8.8410 mL	17.6819 mL	44.2048 mL
	10 mM	0.8841 mL	4.4205 mL	8.8410 mL	22.1024 mL
	15 mM	0.5894 mL	2.9470 mL	5.8940 mL	14.7349 mL
	20 mM	0.4420 mL	2.2102 mL	4.4205 mL	11.0512 mL
	25 mM	0.3536 mL	1.7682 mL	3.5364 mL	8.8410 mL
	30 mM	0.2947 mL	1.4735 mL	2.9470 mL	7.3675 mL
	40 mM	0.2210 mL	1.1051 mL	2.2102 mL	5.5256 mL
	50 mM	0.1768 mL	0.8841 mL	1.7682 mL	4.4205 mL
	60 mM	0.1473 mL	0.7367 mL	1.4735 mL	3.6837 mL
H₂O	80 mM	0.1105 mL	0.5526 mL	1.1051 mL	2.7628 mL
H₂O	100 mM	0.0884 mL	0.4420 mL	0.8841 mL	2.2102 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.