2H-Pyran-2-carboxaldehyde,3,4-dihydro-2,5-dimethyl-

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Names

[ CAS No. ]:
1920-21-4

[ Name ]:
2H-Pyran-2-carboxaldehyde,3,4-dihydro-2,5-dimethyl-

[Synonym ]:
2H-Pyran-2-carboxaldehyde,3,4-dihydro-2,5-dimethyl
Methacrylaldehyde dimer
2,5-dimethyl-3,4-dihydro-2H-pyran-2-carbaldehyde
3,4-dihydro-2,5-dimethyl-2H-pyran-2-carboxaldehyde
3,4-Dihydro-2,5-dimethyl-2H-pyran-2-carbaldehyde
Methacrolein dimer
1,4-Pyran,2,3-dihydro-2,5-dimethyl-2-formyl
2,3-Dihydro-2,5-dimethyl-2-formyl-1,4-pyran
EINECS 217-647-1

Chemical & Physical Properties

[ Density]:
1.047g/cm3

[ Boiling Point ]:
201.4ºC at 760 mmHg

[ Molecular Formula ]:
C8H12O2

[ Molecular Weight ]:
140.18000

[ Flash Point ]:
74.1ºC

[ Exact Mass ]:
140.08400

[ PSA ]:
26.30000

[ LogP ]:
1.65820

[ Vapour Pressure ]:
0.308mmHg at 25°C

[ Index of Refraction ]:
1.512

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UP7875000
CHEMICAL NAME :
1,4-Pyran, 2,3-dihydro-2,5-dimethyl-2-formyl-
CAS REGISTRY NUMBER :
1920-21-4
BEILSTEIN REFERENCE NO. :
0114546
LAST UPDATED :
199806
DATA ITEMS CITED :
3
MOLECULAR FORMULA :
C8-H12-O2
MOLECULAR WEIGHT :
140.20
WISWESSER LINE NOTATION :
T6O BUTJ C1 FVH F1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,803,1986
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,803,1986 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2460 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU. Volume(issue)/page/year: 10,61,1954

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Maleic anhydride
  • Methylpropenal
  • Methyl Vinyl Ether

DownStream

  • Methylpropenal
  • 1,2,6-Hexanetriol,2,5-dimethyl-
  • 2H-Pyran-2-methanol,3,4-dihydro-2,5-dimethyl-
  • 6,8-Dioxabicyclo[3.2.1]octan-7-one,1,4-dimethyl-
  • 2-hydroxy-2,5-dimethylhexanedial
  • Benzenamine,N-[(3,4-dihydro-2,5-dimethyl-2H-pyran-2-yl)methylene]-

Related Compounds

  • [3,3-Dimethyl-1-(4-propoxyphenoxy)butan-2-yl] imidazole-1-carboxylate
  • [1-(4-Ethoxycarbonylphenoxy)-3,3-dimethylbutan-2-yl] imidazole-1-carboxylate
  • Bisathoxycarbonylmethylen-imin
  • 3(t-Butyl)isoxazole-5-yl-acetic acid
  • 7-(((2-Amino-4-thiazolyl)acetyl)amino)-3-chloro-3-cephem-4-carboxylic acid
  • 2,4-Dichloro-3-nitro-1,8-naphthyridine
  • 2-Amino-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxamide
  • (Z)-2-((3S,5S)-3,5-Bis((tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethan-1-ol
  • (+)-2-(2-Chlorophenoxy)-4-(2,6-dioxo-4-(trifluoromethyl)-3,6-dihydropyrimidin-1(2H)-yl)-5-fluorobenzonitrile
  • Tert-butyl 2-thia-5-azabicyclo[2.2.1]heptane-5-carboxylate
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