Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4-Methyl-2H-1,4-benzoxazin-3-one
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4-Methyl-2H-1,4-benzoxazin-3-one
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

21744-84-3

21744-84-3 structure

21744-84-3 structure

Name: 4-Methyl-2H-1,4-benzoxazin-3-one
Chemical Name: 4-methyl-1,4-benzoxazin-3-one
CAS Number: 21744-84-3
Molecular Formula: C₉H₉NO₂
Molecular Weight: 163.17300
Create Date: 2018-11-29 08:53:03
Modify Date: 2025-09-21 18:40:38

Name	4-methyl-1,4-benzoxazin-3-one
Synonyms	4-methyl-2H-1,4-benzooxazin-3-one 4-methyl-2H-benzo[e]1,4-oxazaperhydroin-3-one 4-methyl-2H-1,4-benzoxazine-3(4H)-one 4-methyl-3-oxo-2,3-dihydro-4H-1,4-benzoxazine 4-Methyl-2H-1,4-Benzoxazin-3-one MFCD00601365 4-methyl-2H-benzo[b][1,4]oxazin-3(4H)-one 4-methyl-3,4-dihydro-2H-1,4-benzoxazin-3-one 4-Methyl-2H-1,4-benzoxazin-3(4H)-one 4-methyl-4H-benzo[1,4]oxazin-3-one F0918-7120

Density	1.209g/cm3
Boiling Point	369.5ºC at 760mmHg
Melting Point	57-60ºC
Molecular Formula	C₉H₉NO₂
Molecular Weight	163.17300
Flash Point	177.3ºC
Exact Mass	163.06300
PSA	29.54000
LogP	1.10680
Vapour Pressure	1.18E-05mmHg at 25°C
Index of Refraction	1.563

Hazard Codes	Xi:Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S36
WGK Germany	3
HS Code	2934999090

Precursor 9
5466-88-6 74-88-4 79-04-9 611-24-5
21744-74-1 95-55-6 112689-18-6 1878-87-1
20308-28-5
DownStream 8
23863-09-4 24036-47-3 611-24-5 114566-43-7
77901-22-5 573-27-3 54695-97-5 404871-72-3

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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