Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2H,9H-Isoxazolo[3,2-b][1,3]benzoxazin-9-one,7-chloro-3,3a-dihydro-2-methyl-
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29053-27-8

29053-27-8 structure

29053-27-8 structure

Name: Meseclazone
Chemical Name: 7-chloro-2-methyl-3,3a-dihydro-2H-[1,2]oxazolo[3,2-b][1,3]benzoxazin-9-one
CAS Number: 29053-27-8
Molecular Formula: C₁₁H₁₀ClNO₃
Molecular Weight: 239.65500
Catalog: Research Areas Inflammation/Immunology
Create Date: 2018-03-04 08:00:00
Modify Date: 2024-01-01 19:40:06
Meseclazone exhibits inhibitory potency of secondary phase ADP aggregation. Meseclazone possesses anti-inflammatory, analgesic and antipyretic activity.

Name	7-chloro-2-methyl-3,3a-dihydro-2H-[1,2]oxazolo[3,2-b][1,3]benzoxazin-9-one
Synonyms	Meseclazone NSC297623

Description	Meseclazone exhibits inhibitory potency of secondary phase ADP aggregation. Meseclazone possesses anti-inflammatory, analgesic and antipyretic activity.
Related Catalog	Signaling Pathways >> Others >> Others Research Areas >> Inflammation/Immunology
In Vivo	Meseclazone inhibits collagen-induced aggregation 1 and 4 hr after oral administration[1]. Intravenous administration of Meseclazone and other nonsteroidal anti-inflammatory drugs caused a dose-dependent inhibition of bronchoconstriction resulting in the following order of descending potency: isoproterenol congruent to indomethacin greater than fenoprofen greater than tolmetin greater than aspirin greater than naproxen congruent to ibuprofen greater than phenylbutazone greater than diflunisal greater than Meseclazone greater than 5-CSA[2].
References	[1]. Diamantis W, et al. Meseclazone, 5-chlorosalicylic acid and acetylsalicylic acid. Comparison of their effects on in vitro and ex vivo platelet aggregation. Thromb Haemost. 1978 Aug 31;40(1):24-36. [2]. Diamantis W, et al. Antagonism by meseclazone and other nonsteroidal anti-inflammatory drugs of bradykinin-induced bronchospasm. Pharmacology. 1982;24(4):243-7.

Density	1.47g/cm3
Boiling Point	435.6ºC at 760mmHg
Molecular Formula	C₁₁H₁₀ClNO₃
Molecular Weight	239.65500
Flash Point	217.3ºC
Exact Mass	239.03500
PSA	38.77000
LogP	2.16240
Vapour Pressure	8.62E-08mmHg at 25°C
Index of Refraction	1.632

CHEMICAL IDENTIFICATION

RTECS NUMBER :: NY3200000

CHEMICAL NAME :: 2H,9H-Isoxazolo(3,2-b)(1,3)benzoxazin-9-one, 3,3a-dihydro-7-chloro-2-methyl-

CAS REGISTRY NUMBER :: 29053-27-8

LAST UPDATED :: 199409

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C11-H10-Cl-N-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1160 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 33,147,1975

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 2250 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 33,147,1975

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: >2500 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 33,147,1975 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1280 mg/kg/4D-I

TOXIC EFFECTS :: Gastrointestinal - ulceration or bleeding from stomach Related to Chronic Data - death

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 52,454,1980