Pyranocoumarin

  • Methanopyranorin
  • 4-Hydroxycoumarin anticoagulant no. 63
  • 3,4-(2'-Methyl-2'-methoxy-4'-phenyl)dihydropyranocoumarin
  • 3,4-Dihydro-2-methoxy-2-methyl-4-phenylpyrano[3,2-c]chromen-5-one
  • 3,4-Dihydro-2-methoxy-2-methyl-4-phenyl-2,5-pyrano[3,2-c][1]benzopyran-5-one
Formula
C20H18O4
Structure
Uses
Antispasmodic.

Registry Numbers and Inventories.
CAS
518-20-7
EC (EINECS/ELINCS)
208-248-3
28 36/37 45
RTECS
UQ0335200
RTECS class
Agricultural Chemical and Pesticide; Drug
UN (DOT)
3027
Merck
12,2786
Beilstein/Gmelin
290680
Beilstein Reference
5-19-06-00115

Properties.
Formula
C20H18O4
Formula mass
322.36
Melting point, °C
166
Boiling point, °C
489
Vapor pressure, mmHg
1E-9 (25 C)
Solubility in water
Insoluble
Heat of vaporization
75.5 kJ/mol

Hazards and Protection.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Fire.
Flash Point,°C
216
Fire fighting
Use method most appropriate to fight surrounding fire.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
3027
Response guide
Hazard class
6.1
Packing Group
I