Basic Info:

  • Chemical Synonym(s): L-Ornithine, N5-(aminocarbonyl)-; [14C]-Citrulline; L-2-Amino-5-ureidovaleric acid; Sitrulline; (S)-2-Amino-5-ureidopentanoic acid;
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  • CAS Number: 372-75-8
  • Chemical Formula:


  • MSDS: Download


Melting point
214 °C
1.289 g/cm3
Boiling point
386.7ºC at 760 mmHg
Water Solubility
200 g/L (20 ºC)
Flash Point
Storage Conditionx
Store at 0-5ºC
2.43(at 25℃)
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We help you source L-Citrulline in China

Our Advantages:

We are currently dealing in lipoic acid, calcium gama-hydroxybutyrate and hyaluronic acid.

We have a great advantage in the supply chain of amino acids, a good amino acid plant needs to have fermentation advantages, high costs and barriers, and also high environmental requirements.

We know every amino acid plant in China and can provide you with the most accurate information.

We have a 20+ year track record of working with suppliers in China and rating reports on them, and we keep our suppliers updated with the latest news so our customers can get the latest supplier reports. We know the market well and have early warning notifications on upstream raw material prices to help you build a stable supply chain.

When selecting suppliers, our procurement specialists will audit the qualification of suppliers, conduct thorough investigations such as field visits and sample testing, and make ratings to ensure the authenticity and legality of supplier information.

We have a long-term stable cooperation with GLP laboratories, encounter customer test results and supplier test results do not match the situation, we will commission a third party to test to ensure the accuracy, authenticity and reliability of the experimental results. In this way, we can effectively control the product quality problems.

We have a long-term cooperative warehouse and can follow up packaging and labeling according to safety regulations and customer requirements. In order to effectively prevent damage to the goods in transit, we have prepared various reinforcement measures and packaging solutions.

We have a number of international freight companies with whom we have long-standing cooperation, and we can choose several route options according to the customer's requirements. For more difficult or urgent orders, we will prepare several alternative solutions to ensure safe and timely delivery.


We promise to immediately and unconditionally exchange or return the goods if they have quality problems. Our employees who deal with after-sales issues have many years of international work experience and are familiar with various processes in multinational work, so they can communicate and deal with after-sales issues without any obstacles.

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L-Citrulline, also known as alpha-amino isobutyric acid, is a non-proteinogenic α-amino acid.

It is an amino acid that DNA does not encode. It is a non-essential amino acid most commonly found in watermelon. It is a naturally occurring amino acid, meaning that it can be produced by our body.

It is used to relax muscles and dilate blood vessels. Our body converts into L-arginine. Our kidneys remove excess ammonia from our blood and convert it to urea, so the amount of L-carnitine in our body is meager.

It is naturally occurring in foods such as watermelons, bananas, and sugar beets. 


In addition to being a food additive, L-citrulline is often used as a supplement. It can help with energy levels, exercise performance.

It has numerous health benefits, but most notably, it acts as a precursor for nitric oxide, increasing blood flow and reducing.

It is an essential intermediate in the urea cycle and the glutamine synthetase reaction and participates in neurotransmitter synthesis, ammonia detoxification, methylation reactions, arginine production, and the formation of ornithine.

The most potent and effective L-citrulline dosage is 2-4 grams each day. While most people use L-citrulline as a muscle relaxer and vasodilator, it has also been found to help with blood pressure and bodybuilding.

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