fluorescein and its Impurities

A fluorophore compound (a fluorescent chemical compound ), which is used as a fluorescent tracer . This synthetic organic compound is used in microscopy, dye laser and forensics. Also used as color additive. Reference standards of Fluorescein API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 54 results for fluorescein Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 06 32000

Fluorescein

Fluorescein

  • Catalogue No.:PA 06 32000

  • CAS :

    2321-07-5

  • Molecular Formula : C20H12O5

  • Molecular Weight : 332.31

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32020

Fluorescein - Impurity B

Phthalic Acid

  • Catalogue No.:PA 06 32020

  • CAS :

    88-99-3

  • Molecular Formula : C8H6O4

  • Molecular Weight : 166.13

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32510

Fluorescein-Cadaverine Dihydrobromide

Fluorescein-Cadaverine Dihydrobromide

  • Catalogue No.:PA 06 32510

  • CAS :

    786705-84-8

  • Molecular Formula : C26H27Br2N3O5S

  • Molecular Weight : 653.38

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32520

6-(Fluorescein-5-carboxamido)hexanoic Acid Succinimidyl Ester

6-(Fluorescein-5-carboxamido)hexanoic Acid Succinimidyl Ester

  • Catalogue No.:PA 06 32520

  • CAS :

    148356-00-7

  • Molecular Formula : C31H26N2O10

  • Molecular Weight : 586.55

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32530

Fluorescein-Dipalmitoylphosphatidylethanolamine

Fluorescein-Dipalmitoylphosphatidylethanolamine

  • Catalogue No.:PA 06 32530

  • CAS :

    87706-98-7

  • Molecular Formula : C58H85N2O13PS

  • Molecular Weight : 1081.34

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32540

Fluorescein 5-Isothiocyanate, Isomer 1

Fluorescein 5-Isothiocyanate, Isomer 1

  • Catalogue No.:PA 06 32540

  • CAS :

    3326-32-7

  • Molecular Formula : C21H11NO5S

  • Molecular Weight : 389.39

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32550

Fluorescein 6-Isothiocyanate, Isomer 2

Fluorescein 6-Isothiocyanate, Isomer 2

  • Catalogue No.:PA 06 32550

  • CAS :

    18861-78-4

  • Molecular Formula : C21H11NO5S

  • Molecular Weight : 389.39

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32560

Fluorescein 5-Maleimide

Fluorescein 5-Maleimide

  • Catalogue No.:PA 06 32560

  • CAS :

    75350-46-8

  • Molecular Formula : C24H13NO7

  • Molecular Weight : 427.36

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32570

Fluorescein 6-Maleimide

Fluorescein 6-Maleimide

  • Catalogue No.:PA 06 32570

  • CAS :

    161598-40-9

  • Molecular Formula : C24H13NO7

  • Molecular Weight : 427.36

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32580

5-Carboxyfluorescein

5-Carboxyfluorescein

  • Catalogue No.:PA 06 32580

  • CAS :

    76823-03-5

  • Molecular Formula : C21H12O7

  • Molecular Weight : 376.32

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32590

5-Carboxyfluorescein Diacetate

5-Carboxyfluorescein Diacetate

  • Catalogue No.:PA 06 32590

  • CAS :

    79955-27-4

  • Molecular Formula : C25H16O9

  • Molecular Weight : 460.39

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32600

4-(3,4-Dicarboxycyclohexyl)phthalic Acid

4-(3,4-Dicarboxycyclohexyl)phthalic Acid

  • Catalogue No.:PA 06 32600

  • CAS :

    141573-91-3

  • Molecular Formula : C16H16O8

  • Molecular Weight : 336.29

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32610

Dodecahydro-[5,5'-biisobenzofuran]-1,1',3,3'-tetraone

Dodecahydro-[5,5'-biisobenzofuran]-1,1',3,3'-tetraone

  • Catalogue No.:PA 06 32610

  • CAS :

    122640-83-9

  • Molecular Formula : C16H18O6

  • Molecular Weight : 306.31

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32620

Phthalic Anhydride

Phthalic Anhydride

  • Catalogue No.:PA 06 32620

  • CAS :

    85-44-9

  • Molecular Formula : C8H4O3

  • Molecular Weight : 148.12

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32630

2-(4'-Chlorobenzoyl)benzoic Acid

2-(4'-Chlorobenzoyl)benzoic Acid

  • Catalogue No.:PA 06 32630

  • CAS :

    85-56-3

  • Molecular Formula : C14H9ClO3

  • Molecular Weight : 260.67

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32640

5-Aminobenzene-1,3-diol Hydrochloride

5-Aminobenzene-1,3-diol Hydrochloride

  • Catalogue No.:PA 06 32640

  • CAS :

    6318-56-5

  • Molecular Formula : C6H8ClNO2

  • Molecular Weight : 161.59

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32650

Diacetylfluorescein

Diacetylfluorescein

  • Catalogue No.:PA 06 32650

  • CAS :

    596-09-8

  • Molecular Formula : C24H16O7

  • Molecular Weight : 416.38

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32660

Fluorescein Sodium Salt

Fluorescein Sodium Salt

  • Catalogue No.:PA 06 32660

  • CAS :

    518-47-8

  • Molecular Formula : C20H10Na2O5

  • Molecular Weight : 376.27

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Drug Reference Standards & Impurity Synthesis in India
PA STI 032710

2',4'-Dihydroxy-2-benzoylbenzoic Acid-d4

2',4'-Dihydroxy-2-benzoylbenzoic Acid-d4

  • Catalogue No.:PA STI 032710

  • CAS :

    1794883-65-0

  • Molecular Formula : C14H6D4O5

  • Molecular Weight : 262.25

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32670

5-(6)-Carboxynaphthofluoroscein N-Succinimidyl Ester

5-(6)-Carboxynaphthofluoroscein N-Succinimidyl Ester

  • Catalogue No.:PA 06 32670

  • CAS :

    150347-58-3

  • Molecular Formula : C33H19NO9

  • Molecular Weight : 573.51

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Drug Reference Standards & Impurity Synthesis in India
PA EPF0245000

Fluoresceine sodium - reference spectrum (F0245000)

Fluoresceine sodium - reference spectrum (F0245000)

  • Catalogue No.:PA EPF0245000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0000454

Diacetylfluorescein (Y0000454)

Diacetylfluorescein (Y0000454)

  • Catalogue No.:PA EPY0000454

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0000796

Fluorescein (Y0000796)

Fluorescein (Y0000796)

  • Catalogue No.:PA EPY0000796

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPY0000804

Fluorescein impurity C (Y0000804)

Fluorescein impurity C (Y0000804)

  • Catalogue No.:PA EPY0000804

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1277004

Fluorescein (1277004)

Fluorescein (1277004)

  • Catalogue No.:PA USP1277004

  • CAS :

    2321-07-5

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1277037

Fluorescein Related Compound C (2-(2,4-Dihydroxybenzoyl)benzoic acid) (1277037)

Fluorescein Related Compound C (2-(2,4-Dihydroxybenzoyl)benzoic acid) (1277037)

  • Catalogue No.:PA USP1277037

  • CAS :

    2513-33-9

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA BP549RB

diacetylfluorescein (549RB)

diacetylfluorescein (549RB)

  • Catalogue No.:PA BP549RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 06 32030

Fluorescein - Impurity C

2-(2,4-Dihydroxybenzoyl)benzoic Acid

  • Catalogue No.:PA 06 32030

  • CAS :

    2513-33-9

  • Molecular Formula : C14H10O5

  • Molecular Weight : 258.23

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321000

2',7'-Dichlorofluorescein

2',7'-Dichlorofluorescein

  • Catalogue No.:PA 06 0321000

  • CAS :

    76-54-0

  • Molecular Formula : C20H10Cl2O5

  • Molecular Weight : 401.2

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321001

Sodium 2-(4,5-diiodo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate

Sodium 2-(4,5-diiodo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate

  • Catalogue No.:PA 06 0321001

  • CAS :

    6371-82-0

  • Molecular Formula : C20H8I2Na2O5

  • Molecular Weight : 629.07

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321002

1,2,3,6-Tetrahydrophthalimide

1,2,3,6-Tetrahydrophthalimide

  • Catalogue No.:PA 06 0321002

  • CAS :

    85-40-5

  • Molecular Formula : C8H9NO2

  • Molecular Weight : 151.17

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321003

2',4',5'-Triiodofluorescein

2',4',5'-Triiodofluorescein

  • Catalogue No.:PA 06 0321003

  • CAS :

    56254-06-9

  • Molecular Formula : C20H9I3O5

  • Molecular Weight : 710

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321004

3',6'-Dihydroxy-2',4',7'-triiodo-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one

3',6'-Dihydroxy-2',4',7'-triiodo-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one

  • Catalogue No.:PA 06 0321004

  • CAS :

    83498-90-2

  • Molecular Formula : C20H9I3O5

  • Molecular Weight : 710

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321005

Diiodofluorescein Disodium Salt

Diiodofluorescein Disodium Salt

  • Catalogue No.:PA 06 0321005

  • CAS :

    33239-19-9

  • Molecular Formula : C20H8I2Na2O5

  • Molecular Weight : 628.07

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321006

Sodium 2'-iodo-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate)

Sodium 2'-iodo-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate)

  • Catalogue No.:PA 06 0321006

  • CAS :

    52010-85-2

  • Molecular Formula : C20H9INa2O5

  • Molecular Weight : 502.17

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321008

3',6'-Dihydroxy-4'-iodo-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, Disodium Salt

3',6'-Dihydroxy-4'-iodo-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, Disodium Salt

  • Catalogue No.:PA 06 0321008

  • CAS :

    52010-86-3

  • Molecular Formula : C20H11INa2O5

  • Molecular Weight : 504.19

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321007

2-(2,4-Dihydroxy-3,5-diiodobenzoyl)benzoic Acid

2-(2,4-Dihydroxy-3,5-diiodobenzoyl)benzoic Acid

  • Catalogue No.:PA 06 0321007

  • CAS :

    3480-21-5

  • Molecular Formula : C14H8I2O5

  • Molecular Weight : 510.02

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321009

6'-Hydroxy-3H-spiro[isobenzofuran-1,9'-xanthene]-2',3,3'-trione

6'-Hydroxy-3H-spiro[isobenzofuran-1,9'-xanthene]-2',3,3'-trione

  • Catalogue No.:PA 06 0321009

  • CAS :

    NA

  • Molecular Formula : C20H10O6

  • Molecular Weight : 346.29

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321010

2-(2,3,6-Trioxo-2,6-dihydro-3H-xanthen-9-yl)benzoic Acid

2-(2,3,6-Trioxo-2,6-dihydro-3H-xanthen-9-yl)benzoic Acid

  • Catalogue No.:PA 06 0321010

  • CAS :

    NA

  • Molecular Formula : C20H10O6

  • Molecular Weight : 346.29

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321011

Diiodofluorescein

Diiodofluorescein

  • Catalogue No.:PA 06 0321011

  • CAS :

    31395-16-1

  • Molecular Formula : C20H10I2O5

  • Molecular Weight : 584.1

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0320021

Fluorescein - Impurity B (Sodium Salt)

Phthalic Acid Sodium Salt

  • Catalogue No.:PA 06 0320021

  • CAS :

    10197-71-4

  • Molecular Formula : C8H6O4 . x(Na)

  • Molecular Weight : 166.13 . X(22.99)

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321012

Thiourea, N-[2-[2-(2-azidoethoxy)ethoxy]ethyl]-N′-(3′,6′-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-5-yl)

Thiourea, N-[2-[2-(2-azidoethoxy)ethoxy]ethyl]-N′-(3′,6′-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-5-yl)

  • Catalogue No.:PA 06 0321012

  • CAS :

    1146195-72-3

  • Molecular Formula : C27H25N5O7S

  • Molecular Weight : 563.59

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321013

1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14-tetraoxa-2-azaheptadecan-17-oic acid

1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14-tetraoxa-2-azaheptadecan-17-oic acid

  • Catalogue No.:PA 06 0321013

  • CAS :

    1807518-76-8

  • Molecular Formula : C32H34N2O11S

  • Molecular Weight : 654.69

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PA 06 0321014

tert-butyl (1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11-trioxa-2-azatridecan-13-yl)carbamate

tert-butyl (1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11-trioxa-2-azatridecan-13-yl)carbamate

  • Catalogue No.:PA 06 0321014

  • CAS :

    1807534-77-5

  • Molecular Formula : C34H39N3O10S

  • Molecular Weight : 681.76

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Drug Reference Standards & Impurity Synthesis in India
PA 27 0031467

1-(2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethyl)-3-(3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)thiourea

1-(2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethyl)-3-(3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)thiourea

  • Catalogue No.:PA 27 0031467

  • CAS :

    1807539-04-3

  • Molecular Formula : C29H31N3O8S

  • Molecular Weight : 581.64

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321015

Fluorescein-PEG6-NHS ester

Fluorescein-PEG6-NHS ester

  • Catalogue No.:PA 06 0321015

  • CAS :

    1818294-35-7

  • Molecular Formula : C40H45N3O15S

  • Molecular Weight : 839.87

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321017

1-((3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14,17,20-hexaoxa-2-azatricosan-23-oic acid

1-((3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14,17,20-hexaoxa-2-azatricosan-23-oic acid

  • Catalogue No.:PA 06 0321017

  • CAS :

    2055014-69-0

  • Molecular Formula : C36H42N2O13S

  • Molecular Weight : 742.79

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321018

Fluorescein-PEG6-bis-NHS ester

Fluorescein-PEG6-bis-NHS ester

  • Catalogue No.:PA 06 0321018

  • CAS :

    2055105-59-2

  • Molecular Formula : C44H50N4O17S

  • Molecular Weight : 938.96

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321019

1-Azido-9-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)carbamothioyl)-3,6,12,15,18-pentaoxa-9-azahenicosan-21-oic acid

1-Azido-9-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)carbamothioyl)-3,6,12,15,18-pentaoxa-9-azahenicosan-21-oic acid

  • Catalogue No.:PA 06 0321019

  • CAS :

    2086689-04-3

  • Molecular Formula : C36H41N5O12S

  • Molecular Weight : 767.81

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321020

1-Azido-12-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)carbamothioyl)-3,6,9,15,18,21-hexaoxa-12-azatetracosan-24-oic acid

1-Azido-12-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)carbamothioyl)-3,6,9,15,18,21-hexaoxa-12-azatetracosan-24-oic acid

  • Catalogue No.:PA 06 0321020

  • CAS :

    2100306-50-9

  • Molecular Formula : C38H45N5O13S

  • Molecular Weight : 811.86

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321021

N-(Azido-PEG3)-N-Fluorescein-PEG4-acid

N-(Azido-PEG3)-N-Fluorescein-PEG4-acid

  • Catalogue No.:PA 06 0321021

  • CAS :

    2100306-72-5

  • Molecular Formula : C40H49N5O14S

  • Molecular Weight : 855.91

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321022

Fluorescein-PEG5-Acid

Fluorescein-PEG5-Acid

  • Catalogue No.:PA 06 0321022

  • CAS :

    2183440-40-4

  • Molecular Formula : C34H38N2O12S

  • Molecular Weight : 698.74

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321023

2,5-Dioxopyrrolidin-1-yl 1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14,17-pentaoxa-2-azaicosan-20-oate

2,5-Dioxopyrrolidin-1-yl 1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14,17-pentaoxa-2-azaicosan-20-oate

  • Catalogue No.:PA 06 0321023

  • CAS :

    2353409-62-6

  • Molecular Formula : C38H41N3O14S

  • Molecular Weight : 795.81

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Drug Reference Standards & Impurity Synthesis in India
PA 06 0321024

Thiofluorescein

Thiofluorescein

  • Catalogue No.:PA 06 0321024

  • CAS :

    25319-73-7

  • Molecular Formula : C20H12O3S2

  • Molecular Weight : 364.43

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