N-Methylisatin thiosemicarbazone

  • 1-Methylisatin b-thiosemicarbazone
  • 1-Methylindole-2,3-dione 3-(thiosemicarbazone)
  • Hydrazinecarbothioamide, 2-(1,2-dihydro-1-methyl-2-oxo-3H-indol-3-ylidene)-
  • Methisazone
  • NSC 69811
  • Viruzona
Formula
C10H10N4OS
Structure

Registry Numbers and Inventories.
CAS
1910-68-5
EC (EINECS/ELINCS)
217-616-2
RTECS
NL7960000
RTECS class
Drug; Mutagen
Merck
12,6057
Beilstein/Gmelin
207274
Beilstein Reference
4-21-00-04993

Properties.
Formula
C10H10N4OS
Formula mass
234.27
Melting point, °C
245
Solubility in water
Slightly soluble
pKa/pKb
9.87 (pKa)

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Health.
Exposure effects
The toxicological properties of this material have not been investigated.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.