| | Identification | Back Directory |  | [Name] 
 L-Canavanine
 |  | [CAS] 
 543-38-4
 |  | [Synonyms] 
 AI352153
 AI3-52153
 AI3 52153
 canavanin
 canavanine
 L-CANAVANINE
 FSBIGDSBMBYOPN-VKHMYHEASA-N
 (L) Canavanine,(L)Canavanine
 (+)-O-(Guanidino)-L-homoserine
 2-amino-4-(guanidinooxy)butyricacid
 L-CANAVANINE FREE BASE FROM JACK BEA
 o-[(aminoiminomethyl)amino]homoserine
 o-((aminoiminomethyl)amino)-l-homoserin
 BUTYRICACID,2-AMINO-4-(GUANIDINOOXY)-L-
 L-Homoserine, O-(aminoiminomethyl)amino-
 (S)-2-Amino-4-(guanidinooxy)butyric acid
 o-((aminoiminomethyl)amino)-l-homoserine
 (S)-2-aMino-4-(guanidinooxy)butanoic acid
 l-α-amino-γ-(guanidinooxy)-n-butyric acid
 L-canavanine free base from jack beans*crystallin
 L-ALPHA-AMINO-GAMMA-[GUANIDINOOXY]-N-BUTYRIC ACID
 L-CANAVANINE FREE BASE FROM JACK BEANSCR YSTALLINE
 2-amino-4-(diaminomethylideneamino)oxy-butanoic acid
 L-Canavanine >=98% (TLC), powder, from Canavalia ensiformis
 |  | [Molecular Formula] 
 C5H12N4O3
 |  | [MDL Number] 
 MFCD00055781
 |  | [MOL File] 
 543-38-4.mol
 |  | [Molecular Weight] 
 176.17
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 184°
 |  | [alpha ] 
 D20 +7.9° (c = 3.2)
 |  | [Boiling point ] 
 307.78°C (rough estimate)
 |  | [density ] 
 1.3685 (rough estimate)
 |  | [refractive index ] 
 1.7900 (estimate)
 |  | [storage temp. ] 
 2-8°C
 |  | [solubility ] 
 H2O: <100 mg/mL
 |  | [form ] 
 powder
 |  | [pka] 
 pK1: 2.50(+2);pK2: 6.60(+1);pK3: 9.25(0) (25°C)
 |  | [color ] 
 white to yellow
 |  | [PH] 
 7.93
 |  | [biological source] 
 Canavalia ensiformis
 |  | [Optical Rotation] 
 +7.920 (H2O)
 |  | [Water Solubility ] 
 H2O: <100mg/mL
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 NO synthase inhibitor
 |  | [Definition] 
 ChEBI: A non-proteinogenicL-alpha-amino acid that is L-homoserine substituted at oxygen with a guanidino (carbamimidamido) group. Although structurally related to L-arginine, it is non-proteinoge
ic.
 |  | [Biochem/physiol Actions] 
 Canavanine is a naturally occurring L-amino acid that interferes with L-arginine-utilizing enzymes due to its structural similarity. It is a selective inhibitor of inducible nitric oxide synthase (iNOS). Overproduction of NO by iNOS plays a crucial role in the pathophysiology of septic shock and chronic inflammation.
 |  | [Purification Methods] 
 Crystallise S-canavanine from absolute EtOH or aqueous EtOH. [Tomiyama J Biol Chem 111 48 1935 gave pK9.25 (COOH), pK 7.4 (guanidinium), pK 11.5 (NH4+), Gulland & Morris J Chem Soc 763 1935,(±) Frankel et al. J Chem Soc 3127 1963, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 pp 2622-2628 1961, Beilstein 4 III 1636, 4 IV 3188.]
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