| Meets U.S.P. Requirements |
| Assay (C6H14N4O2) (dried basis) 98.5 - 101.5 % |
| Identification Passes Test |
| Specific Rotation [\a]^2^5D + 26.3 - 27.7 |
| Loss on Drying at 105 C max. 0.5 % |
| Chloride (Cl) max. 0.05 % |
| Residue on Ignition max. 0.3 % |
| Sulfate (SO4) max. 0.03 % |
| Iron (Fe) max. 0.003 % |
| Heavy Metals (as Pb) max. 0.0015 % |
| Chromatographic Purity: |
| Individual Impurities max. 0.5 % |
| Total Impurities max. 2.0 % |
| Organic Volatile Impurities Conforms to USP/NF |
| Assay (C6H14N4O2) (dried basis) 98.5 - 101.5 % |
| Identification Passes Test |
| Lead (Pb) 5 mg/kg max |
| Loss on Drying at 105 C max. 1.0 % |
| Residue on Ignition max. 0.2 % |
| Specific Rotation [\a]^2^0D + 26.0 - 27.9 |
| \Meets BP/Ph.Eur. Chemical Specifications |
| Assay (C6H14N4O2) (dried basis) 98.5 - 101.0 % |
| Identification A Passes Test |
| Identification C Passes Test |
| Appearance of Solution Passes Test |
| Specific Rotation [\a]^2^0D + 25.5 - 28.5 |
| Ninhydrin-Positive Substances Passes Test |
| Chloride (Cl) max. 200 ppm |
| Sulfate (SO4) max. 300 ppm |
| Ammonium (NH4) max. 200 ppm |
| Iron (Fe) max. 10 ppm |
| Heavy Metals (as Pb) max. 10 ppm |
| Loss on Drying max. 0.5 % |
| Ash (sulfated) max. 0.1 % |
| Endotoxin Concentration, IU/mg Information Only |
| Preserve in well-closed containers. |