Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Purity: 98.0%
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3,4-DIHYDROXY-5-METHOXYBENZALDEHYDE OXIME
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
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Email: enquiry@dycnchem.com

66842-91-9

66842-91-9 structure

66842-91-9 structure

Name: 3,4-DIHYDROXY-5-METHOXYBENZALDEHYDE OXIME
Chemical Name: (4E)-2-hydroxy-4-[(hydroxyamino)methylidene]-6-methoxycyclohexa-2,5-dien-1-one
CAS Number: 66842-91-9
Molecular Formula: C₈H₉NO₄
Molecular Weight: 183.16100
Create Date: 2016-03-08 13:50:51
Modify Date: 2025-08-25 15:43:55

Name	(4E)-2-hydroxy-4-[(hydroxyamino)methylidene]-6-methoxycyclohexa-2,5-dien-1-one
Synonyms	BENZALDEHYDE,3,4-DIHYDROXY-5-METHOXY-,OXIME 3,4-Dihydroxy-5-methoxybenzaldoxime 3,4-Dihydroxy-5-methoxybenzaldehyde oxime

Density	1.42g/cm3
Boiling Point	355.2ºC at 760 mmHg
Molecular Formula	C₈H₉NO₄
Molecular Weight	183.16100
Flash Point	168.6ºC
Exact Mass	183.05300
PSA	82.28000
LogP	0.91450
Index of Refraction	1.613

CHEMICAL IDENTIFICATION

RTECS NUMBER :: CU5640000

CHEMICAL NAME :: Benzaldehyde, 3,4-dihydroxy-5-methoxy-, oxime

CAS REGISTRY NUMBER :: 66842-91-9

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C8-H9-N-O4

MOLECULAR WEIGHT :: 183.18

WISWESSER LINE NOTATION :: QNU1R CQ DQ EO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 650 mg/kg

TOXIC EFFECTS :: Behavioral - altered sleep time (including change in righting reflex)

REFERENCE :: JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc., Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC 20037) V.6- 1963- Volume(issue)/page/year: 7,178,1964

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