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Isoxepac

Basic information Safety Supplier Related

Isoxepac Basic information

Product Name:
Isoxepac
Synonyms:
  • Olopatadine Impurity 3(Olopatadine USP RC C)
  • 6,11-Dihydro-11-oxodibenzo[b,e]oxepin-2-acetic acid, 97.0%
  • e)oxepin-2-aceticacid,6,11-dihydro-11-oxo-dibenz(
  • hp549
  • DIBENZ[B,E]OXEPIN-2-ACETIC ACID, 6,11-DIOHYDRO-11-OXO
  • 6,11-Hydro-11-Oxo-Dibenz[B,E]Oxepin-2-Acetic Acid
  • Olapatadine
  • 11-Oxo-6,11-Dihydrobenz(b,e)oxepin-2-Acetic Acid (Isoxepac)
CAS:
55453-87-7
MF:
C16H12O4
MW:
268.26
EINECS:
611-268-9
Product Categories:
  • API
  • Pharmaceutical intermediate
  • APIs Intermediate
  • Intermediates & Fine Chemicals
  • Pharmaceuticals
  • bc0001
  • K00001
Mol File:
55453-87-7.mol
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Isoxepac Chemical Properties

Melting point:
130-132°C
Boiling point:
528.2±50.0 °C(Predicted)
Density 
1.39 g/cm3
storage temp. 
Sealed in dry,Room Temperature
solubility 
soluble in Methanol
pka
4.24±0.10(Predicted)
color 
White to Light yellow to Light orange
Merck 
14,5237
InChIKey
QFGMXJOBTNZHEL-UHFFFAOYSA-N
CAS DataBase Reference
55453-87-7(CAS DataBase Reference)
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Safety Information

Hazard Codes 
T
Risk Statements 
25-62
Safety Statements 
36/37-45
RIDADR 
UN 2811 6.1 / PGIII
RTECS 
HQ4110000
HazardClass 
6.1
PackingGroup 
III
HS Code 
2932996560
Toxicity
LD50 orally in rats: 199 mg/kg (Ueno)
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Isoxepac Usage And Synthesis

Chemical Properties

Beige Solid

Uses

Isoxepac is a non-steroidal anti-inflammatory with analgesic and antipyretic activity. It is more slowly absorbed and eliminated in the rat and rabbit after oral dosing than in the dog, rhesus monkey and man.It can be used to treat allergic rhinitis, urticaria, and skin diseases with itching symptoms.

Definition

ChEBI: Isoxepac is a dibenzooxazepine.

Preparation

Isoxic acid is an important intermediate in the synthesis of the new preferred anti-allergic drug, olopatadine hydrochloride, preparation method of isoxepac:
(1) condensation: prepare p-hydroxyphenylaceticacid 8-12 part, phthalide 6-12 part, sodium methylate 8-12 part by weight; Dissolve with DMAC and to add said sodium methylate behind said p-hydroxyphenylaceticacid and the phthalide; Be that 0.1-10Pa is heated to 80-170 ℃ of reaction 3-10h at pressure then; Regulate the pH value to 1-5,4-(2-carboxyl benzyloxy) toluylic acid is separated out in crystallization;
(2) cyclization: with Glacial acetic acid min. 99.5 dissolving step (1) gained 4-(2-carboxyl benzyloxy) toluylic acid, adding 3-52 weight part polyphosphoric acid again, is that 0.1-10Pa is heated to 30-100 ℃ of reaction 3-12h at pressure, and crystallisation by cooling gets the Isoxepac bullion then;
(3) purify: behind the said Isoxepac bullion of acetic acid ethyl dissolution, refining decolouring gets the Isoxepac product.
https://patents.google.com/patent/CN102838582A/en

brand name

Artil(Hoechst-Roussel) .

IsoxepacSupplier

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