Amino Acids & Peptides
REACH
DL-citrulline
CAS Number
627-77-0
EC Number
211-012-2
What is DL-citrulline?
DL-Citrulline (CAS 627-77-0) is the racemic form of the non-essential amino acid citrulline, distinct from the naturally occurring L-isomer.
Where is DL-citrulline used?
- Pharmaceutical synthesis: biochemical intermediate and building block
- Peptide chemistry: racemic reference standard or precursor where stereospecificity is not required
- Nutritional research: formulation studies examining urea cycle metabolism and amino acid bioavailability
- Enzyme activity assays target argininosuccinate synthetase and related metabolic pathways.
Good to know: Distinct from the naturally occurring L-isomer. Purity commonly 98% or higher by HPLC.
Commercial specifications
- Purity commonly 98% or higher by HPLC
- Packaging from small laboratory quantities to bulk orders
Other Names (Synonyms)
N(5)-carbamoyl-DL-ornithine|N(5)-(aminocarbonyl)ornithine|N(5)-(aminocarbonyl)-DL-ornithine|2-amino-5-ureido-pentanoic acid|2-amino-5-(carbamoylamino)pentanoic acid|2-amino-5-(aminocarbonylamino)pentanoic acid|Cit|DL-2-amino-5-ureidovaleric acid
What are the physical properties of DL-citrulline?
Melting Point 210 °C
Boiling Point 386.7±42.0 °C(Predicted)
Density 1.289±0.06 g/cm3(Predicted)
Appearance white crystalline powder
Color White to off-white
Form Solid
Log P -1.373 (est)
Which trade and regulatory codes apply to DL-citrulline?
WGK (Germany) 3