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CAS

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65897-46-3

Desmethyl Piroxicam (Piroxicam Impurity B) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 4-hydroxy-N-(pyridin-2-yl)-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide

    Cas No: 65897-46-3

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  • 65897-46-3 Structure

  • Basic information

    1. Product Name: Desmethyl Piroxicam (Piroxicam Impurity B)
    2. Synonyms: Desmethyl Piroxicam (Piroxicam Impurity B);4-Hydroxy-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxaMide 1,1-Dioxide;PiroxicaM IMpurity B
    3. CAS NO:65897-46-3
    4. Molecular Formula: C14H11N3O4S
    5. Molecular Weight: 317.31984
    6. EINECS: N/A
    7. Product Categories: Amines;Heterocycles;Intermediates & Fine Chemicals;Metabolites & Impurities;Pharmaceuticals;Sulfur & Selenium Compounds
    8. Mol File: 65897-46-3.mol

  • Chemical Properties

    1. Melting Point: 224℃ (decomposition)
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: 1.611g/cm3
    6. Refractive Index: 1.727
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. PKA: 4.50±1.00(Predicted)
    10. CAS DataBase Reference: Desmethyl Piroxicam (Piroxicam Impurity B)(CAS DataBase Reference)
    11. NIST Chemistry Reference: Desmethyl Piroxicam (Piroxicam Impurity B)(65897-46-3)
    12. EPA Substance Registry System: Desmethyl Piroxicam (Piroxicam Impurity B)(65897-46-3)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 65897-46-3(Hazardous Substances Data)

65897-46-3 Usage

Uses

Piroxicam impurity B.

Check Digit Verification of cas no

The CAS Registry Mumber 65897-46-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,8,9 and 7 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 65897-46:
(7*6)+(6*5)+(5*8)+(4*9)+(3*7)+(2*4)+(1*6)=183
183 % 10 = 3
So 65897-46-3 is a valid CAS Registry Number.
InChI:InChI=1/C14H11N3O4S/c18-13-9-5-1-2-6-10(9)22(20,21)17-12(13)14(19)16-11-7-3-4-8-15-11/h1-8,17-18H,(H,15,16,19)

65897-46-3Downstream Products

65897-46-3Relevant articles and documents

Process for preparing 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-[N-(2-pyridinyl)carboxamide]-1,1-dioxide, and its phosphoric ester

-

, (2008/06/13)

The present invention refers to a new process for preparing 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-[N-(2-pyridinyl)carboxamide]-1,1-dioxide, its phosphoric ester and the obtained phosphoric ester.

Process for the preparation of 4-hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides

-

, (2008/06/13)

A novel process for preparing 4-hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides is disclosed. The process involves the base catalyzed rearrangement of a saccharinacetamide of structure I to give II, STR1 wherein R1 is hydrogen or lower alkyl and R2 is lower alkyl, aryl or a heterocyclic ring selected from the group consisting of pyridyl, substituted-pyridyl, and thiazolyl. Compounds of the formula II have useful anti-inflammatory properties. In addition, they can be used as intermediate in the preparation of known anti-inflammatory agents.

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