L(+)-Arginine
[CAS# 74-79-3]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyrazines
• Name: L(+)-Arginine
• Synonyms: (S)-(+)-Arginine; 2-Amino-5-guanidinovaleric acid; 2-Amino-5-guanidinopentanoic acid
• Molecular Formula: C₆H₁₄N₄O₂
• Molecular Weight: 174.20
• CAS Registry Number: 74-79-3
• EC Number: 200-811-1

Properties

• Melting point: 223-224 ºC
• alpha: 27.1 º (c=8, 6N HCl)
• Water solubility: 148.7 g/L (20 ºC)

Safety Data

• Safety Description: S24/25

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Serious eye damage	Eye Dam.	1	H318
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2A	H319
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - repeated exposure	STOT RE	1	H372