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

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

21784-53-2

21784-53-2 structure

21784-53-2 structure

Name: 1H-2,3-benzothiazin-4(3H)-one 2,2-dioxide
Chemical Name: 2,2-dioxo-1H-2λ6,3-benzothiazin-4-one
CAS Number: 21784-53-2
Molecular Formula: C₈H₇NO₃S
Molecular Weight: 197.21100
Create Date: 2018-06-21 19:37:35
Modify Date: 2025-09-21 21:52:18

Name	2,2-dioxo-1H-2λ6,3-benzothiazin-4-one
Synonyms	EINECS 244-577-9 3,4-Dihydro-4-oxo-1H-2,3-benzothiazin-S-dioxid 2,2-dioxo-1H-2

Density	1.456g/cm3
Molecular Formula	C₈H₇NO₃S
Molecular Weight	197.21100
Exact Mass	197.01500
PSA	75.11000
LogP	1.35100
Index of Refraction	1.603

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DL0755000

CHEMICAL NAME :: 1H-2,3-Benzothiazin-4(3H)-one, 2,2-dioxide

CAS REGISTRY NUMBER :: 21784-53-2

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C8-H7-N-O3-S

MOLECULAR WEIGHT :: 197.22

WISWESSER LINE NOTATION :: T66 BVMSW EHJ

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 :: 750 mg/kg

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

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: 16,1133,1973

HS Code	2914399090

HS Code	2914399090
Summary	2914399090. other aromatic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

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