Molekula
L-Citrulline
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Citrulline is a non-essential amino acid involved in the urea cycle and nitric oxide synthesis, commonly used in dietary supplements and research for supporting cardiovascular health and exercise performance. Available in powder form with a purity of ≥98%, it has a CAS number of 372-75-8, molecular formula C6H13N3O3, and molecular weight of 175.19 g/mol. Store at ambient temperatures. Molekula supplies L-Citrulline from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — $67.60 per pack
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100 g — $126.90 per pack
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200 g — $209.00 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystals or crystalline powder |
| Specific rotation | +24.5°～+26.8° |
| pH | 5.0 - 7.0 |
| Loss on Drying | ≤0.3% |
| Chloride (Cl-) | ≤0.02% |
| Assay | 98.5% - 101.0% |
| Residue on Ignition | ≤0.1% |
| Iron (Fe) | ≤10PPM |
| Lead (Pb) | ≤10PPM |
| Arsenic trioxide (As2O3) | ≤1PPM |
| Ammonium (NH4+) | ≤0.02% |
| Sulphates (SO4)(2-) | ≤0.02% |
| State of Solution | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 235.5 °C |
| pKa | pKa = 2.43 (at 25 °C) |
Source: PubChem CID 9750 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 19339941 |
| CAS Number | 372-75-8 |
| IUPAC Name | (2S)-2-amino-5-(carbamoylamino)pentanoic acid |
| EC Number | 206-759-6 |
| Molecular Formula | C6H13N3O3 |
| Molecular Weight | 175.19 |
| Exact Mass | 175.0957 |
| SMILES | C(C[C@@H](C(=O)O)N)CNC(=O)N |
| InChIKey | RHGKLRLOHDJJDR-BYPYZUCNSA-N |
| InChI | InChI=1S/C6H13N3O3/c7-4(5(10)11)2-1-3-9-6(8)12/h4H,1-3,7H2,(H,10,11)(H3,8,9,12)/t4-/m0/s1 |
| PubChem CID | 9750 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2924191150 |
| Tariff Code | 2924190090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (S)-2-Amino-5-ureidopentanoic acid
- citrulline
- Citrulline, L-
- delta-Ureidonorvaline
- L-Cytrulline
- N(delta)-Carbamylornithine
- N5-(Aminocarbonyl)-L-ornithine
- N5-(Aminocarbonyl)ornithine
- N5-Carbamoyl-L-ornithine
- Sitrulline
Frequently asked questions
What is L-Citrulline used for?
L-Citrulline is commonly used in dietary supplements to support cardiovascular health, enhance exercise performance, and promote nitric oxide production.
What is the chemical formula and molecular weight of L-Citrulline?
The chemical formula is C6H13N3O3 and the molecular weight is 175.19 g/mol.
How should L-Citrulline be stored?
L-Citrulline should be stored at ambient temperature, protected from moisture and light.
What grade of L-Citrulline does Molekula supply?
Molekula supplies L-Citrulline in pharmaceutical and research-grade quality.
Can Molekula supply L-Citrulline in bulk?
Yes, Molekula can supply L-Citrulline in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of L-Citrulline?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.