1,5-Pentamethylenetetrazole

Independent reference data for 1,5-Pentamethylenetetrazole (CAS 54-95-5), compiled from public chemistry databases.

Registry identifiers across databases

Computed descriptors

Physicochemical values on record

Documented uses on record

5H-Tetrazolo[1,5-a]azepine, 6,7,8,9-tetrahydro-: ACTIVESubstances that act in the brain stem or spinal cord to produce tonic or clonic convulsions, often by removing normal inhibitory tone. They were formerly used to stimulate respiration or as antidotes to barbiturate overdose. They are now most commonly used as experimental tools.

Synonyms and trade names

Pentetrazol; PENTYLENETETRAZOLE; Pentylenetetrazol; 54-95-5; Metrazole; 1,5-Pentamethylenetetrazole; Cardiol; Coranormol; Cenazol; Korazol; Leptazol; Cardiazole; Corazole; Coryvet; Korazole; Leptazole

GHS hazard classification

Reported hazard statements	H301 (100%), H315 (81.2%), H319 (81.2%), H335 (81.2%)

H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]

H315 (81.2%): Causes skin irritation [Warning Skin corrosion/irritation]

What the public record says

1,5-Pentamethylenetetrazole · CAS 54-95-5 · C6H10N4. UNII WM5Z385K7T. Melting Point: 135 to 136 °F (NTP, 1992); LogP: 0.14.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.