| Synonyms | Sodium guanylate, sodium 5'-guanylate |
| Definition | |
| Chemical name | Disodium guanosine-5'-monophosphate |
| Einecs | 221-849-5 |
| Chemical formula | C10H12N5Na2O8P· x H2O (x = ca. 7) |
| Molecular weight | 407,19 (anhydrous) |
| Assay | Content not less than 97,0 % on the anhydrous basis |
| Description | Odourless, colourless or white crystals or white crystalline powder |
| Identification | |
A.Positive test for ribose, for organic phosphate, and for sodium | |
B.pH of a 5 % solution | Between 7,0 and 8,5 |
C.Spectrometry: | maximum absorption of a 20 mg/l solution in 0,01N HCl at 256 nm |
| Purity | |
| Loss on drying | Not more than 25 % (120 oC, 4h) |
| Other nucleotides | Not detectable by thin-layer chromatography |
| Lead | Not more than 2 mg/kg |
