NG, N'G-Dimethyl-L-arginine . dihydrochlorideDoes not inhibit nitric oxide synthesis, both in vitro and in vivo. Product SpecificationAlternative Name: SDMA . 2HCl, H-Arg(di-Me)-OH . 2HCl (symmetrical) Formula: C8H18N4O2 . 2HCl MW: 202.2 . 73.0 Purity: 98% (TLC) Appearance: White to off-white powder. Solubility: Soluble in water (100mg/ml). Long Term Storage: -20°C Handling: Hygroscopic.