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195855

Sigma-Aldrich

Precocene I

99%

Synonym(s):

7-Methoxy-2,2-dimethyl-3-chromene

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About This Item

Empirical Formula (Hill Notation):
C12H14O2
CAS Number:
Molecular Weight:
190.24
EC Number:
MDL number:
UNSPSC Code:
12352204
PubChem Substance ID:
NACRES:
NA.25

assay

99%

form

liquid

refractive index

n20/D 1.56 (lit.)

bp

68 °C/0.1 mmHg (lit.)

density

1.052 g/mL at 25 °C (lit.)

application(s)

agriculture
environmental

SMILES string

COc1ccc2C=CC(C)(C)Oc2c1

InChI

1S/C12H14O2/c1-12(2)7-6-9-4-5-10(13-3)8-11(9)14-12/h4-8H,1-3H3

InChI key

CPTJXGLQLVPIGP-UHFFFAOYSA-N

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup


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S J Chiou et al.
Insect biochemistry and molecular biology, 28(10), 801-808 (1998-11-10)
The cDNA coding for a Ser-protease-related protein (Scg-SPRP) was cloned from desert locust (Schistocerca gregaria) midgut. The derived amino acid sequence consists of 260 residues and shows strong sequence similarity to insect trypsin-like molecules. It is, however, likely that Scg-SPRP
Carlos A Gartner et al.
Biochemistry, 44(6), 1846-1855 (2005-02-09)
Cytochrome P450 3A4 is a drug-metabolizing enzyme of extraordinarily broad substrate specificity. This quality imparts upon the enzyme special importance in understanding its determinants of activity and substrate recognition. Limited successes in P450 3A4 active-site structure studies have been achieved
Maryla Szczepanik et al.
Journal of agricultural and food chemistry, 53(15), 5905-5910 (2005-07-21)
Starting from precocenes I and II, four of their derivatives with a lactone moiety were obtained. The compounds have been assessed as antifeedants against several diverse insect species including the storage pests the confused flour beetle (Tribolium confusum Duv., larvae
P De Azambuja et al.
Memorias do Instituto Oswaldo Cruz, 86 Suppl 2, 113-115 (1991-01-01)
Proallatotoxins, and particularly precocenes, are exceptionally promising models for studying Rhodnius prolixus physiology and for comparison with other natural compounds with antihormonal activities. Effects of precocenes on feeding, development and reproduction of R. prolixus are being detailed. The precocenes reveal
K Sharma et al.
Phytochemical analysis : PCA, 12(4), 263-265 (2001-11-14)
The chromenes precocene I (7-methoxy-2,2-dimethylchromene) and precocene II (6,7-methoxy-2,2-dimethylchromene) extracted from Ageratum houstonianum and A. conyzoides have been analysed by reverse-phase high-performance liquid chromatography. Separation was achieved using a C18 column eluted with a linear gradient of acetonitrile and water.

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