3-Methoxy-1,2-benzisothiazole 1,1-dioxide
- CAS18712-14-6
- CatalogueRS-I015184
- FormulaC8H7NO3S
- MW197.21
On this page
Product identification
| Product name | 3-Methoxy-1,2-benzisothiazole 1,1-dioxide |
|---|---|
| Catalogue No. | RS-I015184 |
| CAS No. | 18712-14-6 |
| Molecular formula | C8H7NO3S |
| Molecular weight | 197.21 |
| Availability | Custom synthesis— made to order, typically 3–4 weeks |
| Standard type | Impurity Reference Standards |
| Drug substance | Piroxicam |
| Also known as | 3-Methoxy-1,2-benzothiazole 1,1-dioxide; 3-Methoxybenzo[d]isothiazole 1,1-dioxide |
| Storage | Refer to the certificate of analysis (COA) supplied with each lot |
| Intended use | For laboratory and research use only. Not for human or veterinary use. |
What is stated on the certificate
Content and purity are assigned per lot and stated on the certificate of analysis issued for the batch you receive — they are not a catalogue-level figure. The certificate records the tests performed, the specification applied and the result obtained for that lot.
| Field | Basis |
|---|---|
| Identity | Spectroscopic and chromatographic methods appropriate to the material |
| Purity | Chromatographic purity, area normalisation unless stated otherwise |
| Assay / content | Mass balance, corrected for the stated volatiles and residue |
| Catalogue and batch numbers | RS-I015184 / batch number on the certificate |
| Retest date | Printed on the certificate for the lot supplied |
Frequently asked
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Is the assigned value given on an “as is” basis?
How should this material be stored?
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Finding this standard
Buyers reach this compound by CAS number, by catalogue number, through the drug substance it belongs to, or through the type of standard it is. Those routes all start here:
- Other impurities of Piroxicam
- Impurity Reference Standards of this kind
- Documents for this item (COA, SDS)
- Certificate of analysis for RS-I015184
- Request a quotation for RS-I015184
Searching another way? Send the structure, a SMILES string or the pharmacopoeial name — a CAS number is not required for a non-compendial impurity. Write to sales@rssechem.com.
Other standards of Piroxicam
All 38 further standards are listed here — every link is in the page, not loaded later.
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Piroxicam
IN STOCKRS-M120098 -
Piroxicam EP Impurity B HCl
IN STOCKRS-P065010 -
Piroxicam EP Impurity G
IN STOCKRS-P065005 -
Piroxicam EP Impurity H
IN STOCKRS-P065004 -
Piroxicam EP Impurity I
IN STOCKRS-P065008 -
Piroxicam-Impurity G (Monohydrate Salt)
IN STOCKRS-P065012 -
1,3-Dipalmitoyl-2-chloropropanediol-[D5]
BACK ORDERRS-I097347 -
2-(1,1-Dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetamide
IN STOCKRS-D112127 -
2-Chloro-N-(pyridin-2-yl)acetamide
CUSTOM SYNTHESISRS-P001979 -
3,4,5,6-tetrahydropyridin-2-amine
CUSTOM SYNTHESISRS-U083666 -
3-Oxo-1,2-benzoisothiazoline-2-acetic Acid Methyl Ester 1,1-Dioxide
IN STOCKRS-U018489 -
4-Hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-Dioxide
CUSTOM SYNTHESISRS-D116053 -
Dimethyl 2,2'-disulfanediyldibenzoate
IN STOCKRS-U211OLD -
Ethyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide
IN STOCKRS-I006143 -
ethyl C4-hydroxyphenylalaninate 1,1-dioxide
BACK ORDERRS-U064245 -
Methyl 4-(Pyridin-2-ylamino)-2-methyl-2H-1,2-benzothiazine-2-carboxylate 1,1-Dioxide
BACK ORDERRS-U082527 -
N-(6-Methyl-2-pyridyl)-4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-Dioxide
CUSTOM SYNTHESISRS-P025372 -
N1-(Pyridin-2-yl)oxalamide
IN STOCKRS-U057877 -
O-Methyl Piroxicam
IN STOCKRS-P065014 -
Piroxicam betacyclodextrin
BACK ORDERRS-P065022 -
Piroxicam Cinnamate
BACK ORDERRS-M120175 -
Piroxicam D3
IN STOCKRS-P065016 -
Pyridin-2-yl-urea
CUSTOM SYNTHESISRS-U084076 -
Piroxicam Impurity 1
CUSTOM SYNTHESISRS-P065019 -
Piroxicam Impurity 4
IN STOCKRS-P065001 -
Piroxicam Impurity 5
IN STOCKRS-P065006 -
Piroxicam Impurity 6
CUSTOM SYNTHESISRS-P065003 -
Piroxicam Impurity 7
IN STOCKRS-P065007 -
Piroxicam Impurity 8
IN STOCKRS-P065009 -
Piroxicam Impurity 13
IN STOCKRS-P065015 -
Piroxicam Impurity 13 Hydrochloride
IN STOCKRS-P065020 -
Piroxicam Impurity 19
IN STOCKRS-I001BI7 -
Piroxicam Impurity 19
CUSTOM SYNTHESISRS-P065017 -
Piroxicam Impurity 21
IN STOCKRS-P065018 -
Piroxicam Impurity 22 (N-Nitroso Piroxicam Impurity 21)
IN STOCKRS-P065002 -
Piroxicam Impurity 27
CUSTOM SYNTHESISRS-Z400KXE -
Piroxicam Impurity 29
BACK ORDERRS-P065011
Pharmacopoeial names (EP, USP, BP, JP) are used for identification purposes only and do not imply endorsement by those bodies. This product is supplied for laboratory and research use only — not for human or veterinary use.






![Chemical structure of 1,3-Dipalmitoyl-2-chloropropanediol-[D5]](/structures/w4/IBJIXNLLGSRECE-YYRBTATQSA-N.webp?v=8)






























