6-Bromoisatin(6326-79-0)'s chemical formula is C₁₁H₁₄ClN,and is a compound which also can be called for 4-Phenyl-1,2,3,6-tetrahydroxpyridine;4-PHENYL-1,2,3,6-Tetrahydropyridine HCL;1,2,3,6-Tetrahydropyridine-4-phenyl hydrochloride.
Routine cases, its Molar mass is 195.6886 g/mol, and, melting point is about 202-203.5 °C(lit.) and flash Point is 119.9 °C,its boiling point and vapour pressure are 267.9 °C at 760 mmHg  and 0.00792 mmHg at 25°C.It should be stored in a cool, dry place or a tightly closed container.The product categories are heterocyclic compounds;heterocyclic building blocks;pyrimidines, pyridines, purines and pteredines; and C9 to C46.Structure is :
                               

Carcinogenicity of 4-Phenyl-1,2,3,6-tetrahydropyridine hydrochloride(43064-12-6) hasn't been listed as a carcinogen by  NTP, IARC,ACGIH, or CA Prop 65.And its toxicological properties have not been fully investigated.

Hazard Codes: T,Xn
Risk Statements:
20:  Harmful by inhalation
21:  Harmful in contact with skin
22:  Harmful if swallowed 
23:  Toxic by inhalation
24:  Toxic in contact with skin
25:  Toxic if swallowed
40:  Limited evidence of a carcinogenic effect
Safety Statements:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
28A     After contact with skin, wash immediately with plenty of water.
36:  Wear suitable protective clothing 
37:  Wear suitable gloves
38:  In case of insufficient ventilation, wear suitable respiratory equipment
39:  Wear eye/face protection
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)

Polymerization of the 4-Phenyl-1,2,3,6-tetrahydropyridine hydrochloride(43064-12-6)  can be stable under normal temperature and pressure conditions. And is not compatible with strong oxidizing agents. Also prevent it to broken down into hazardous decomposition products:oxides of nitrogen,carbon dioxide,carbon monoxide,hydrogen chloride.
4-Phenyl-1,2,3,6-tetrahydropyridine hydrochloride(43064-12-6) is hazardous,so the first aid measures should be known .Such as:
Skin: Get medical aid. Should flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon. 
Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.And as soon as to get medical aid.
Ingestion: Wash mouth out with water,and get medical aid immediately.