Fluorescein isothiocyanate (Spiro Form)

Modify Date: 2025-08-22 10:39:58

Fluorescein isothiocyanate (Spiro Form) Structure
Fluorescein isothiocyanate (Spiro Form) structure
 Common Name Fluorescein isothiocyanate (Spiro Form)
CAS Number 18861-78-4 Molecular Weight 389.381
Density 1.5±0.1 g/cm3 Boiling Point 719.1±60.0 °C at 760 mmHg
Molecular Formula C21H11NO5S Melting Point N/A
MSDS N/A Flash Point 388.7±32.9 °C

 Use of Fluorescein isothiocyanate (Spiro Form)


Fluorescein-6-isothiocyanate is a fluorescent isomeric haptenic probes with Kds of 8.74, 2.72 and 1.88 for N-Acetyl-L-Lysine, normal mouse IgG and 4-4-20, respectively[1].

 Names

Name 3',6'-dihydroxy-5-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one
Synonym More Synonyms

 Fluorescein isothiocyanate (Spiro Form) Biological Activity

Description Fluorescein-6-isothiocyanate is a fluorescent isomeric haptenic probes with Kds of 8.74, 2.72 and 1.88 for N-Acetyl-L-Lysine, normal mouse IgG and 4-4-20, respectively[1].
Related Catalog
Target

Kd: 8.74 (N-Acetyl-L-Lysine), 2.72 (normal mouse IgG), 1.88 (4-4-20)[1]

References

[1]. Swindlehurst CA, et al. Fluorescence measurements of immune complexes of Mab 4-4-20 with isomeric haptens. Biophys J. 1991 Mar;59(3):619-28.

 Chemical & Physical Properties

Density 1.5±0.1 g/cm3
Boiling Point 719.1±60.0 °C at 760 mmHg
Molecular Formula C21H11NO5S
Molecular Weight 389.381
Flash Point 388.7±32.9 °C
Exact Mass 389.035797
PSA 120.44000
LogP 4.00
Vapour Pressure 0.0±2.4 mmHg at 25°C
Index of Refraction 1.754

 Safety Information

HS Code 2932999099

 Synthetic Route

Thiophosgene structure

Thiophosgene

CAS#:463-71-8

6-Aminofluorescein structure

6-Aminofluorescein

CAS#:51649-83-3

~%

Fluorescein isothiocyanate (Spiro Form) Structure

Fluorescein iso...

CAS#:18861-78-4

Literature: Tomasch, Miriam; Schwed, J. Stephan; Kuczka, Karina; Meyer Dos Santos, Sascha; Harder, Sebastian; Nuesing, Rolf M.; Paulke, Alexander; Stark, Holger ACS Medicinal Chemistry Letters, 2012 , vol. 3, # 9 p. 774 - 779
Resorcine structure

Resorcine

CAS#:108-46-3

~%

Fluorescein isothiocyanate (Spiro Form) Structure

Fluorescein iso...

CAS#:18861-78-4

Literature: ACS Medicinal Chemistry Letters, , vol. 3, # 9 p. 774 - 779
6-Nitrofluorescein (isomer II) structure

6-Nitrofluoresc...

CAS#:27402-68-2

~%

Fluorescein isothiocyanate (Spiro Form) Structure

Fluorescein iso...

CAS#:18861-78-4

Literature: ACS Medicinal Chemistry Letters, , vol. 3, # 9 p. 774 - 779
4-Nitrophthalic acid structure

4-Nitrophthalic acid

CAS#:610-27-5

~%

Fluorescein isothiocyanate (Spiro Form) Structure

Fluorescein iso...

CAS#:18861-78-4

Literature: ACS Medicinal Chemistry Letters, , vol. 3, # 9 p. 774 - 779
3',6'-Bis(acetyloxy)-6-nitrospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one structure

3',6'-Bis(acety...

CAS#:53299-21-1

~%

Fluorescein isothiocyanate (Spiro Form) Structure

Fluorescein iso...

CAS#:18861-78-4

Literature: ACS Medicinal Chemistry Letters, , vol. 3, # 9 p. 774 - 779

 Customs

HS Code 2932999099
Summary 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

Fluorescein isothiocyanate
Fluorescein-6-isothiocyanate
6-FITC (isomer II)
6-FITC
6-Isothiocyanatofluorescein
6-Isothiocyanatofluorescein (isomer II)
FITC 'Isomer II'
fluorescein 6-isothiocyanate
Fluorescein 6-Isothiocyanate (isoMer II)
FITC
Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-6-isothiocyanato-
Fluorescein Isothiocyanate (isomer II)
fluorescein-5-isothiocyanate
FITC isomer II [Fluorescein-6-isothiocyanate]
3',6'-Dihydroxy-6-isothiocyanato-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one
F6ITC
The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.
Top Suppliers:I want be here

Get all suppliers and price by the below link:

Fluorescein isothiocyanate (Spiro Form) suppliers

Fluorescein isothiocyanate (Spiro Form) price

Related Compounds: More...
Fluorescein isothiocyanate
3326-32-7
FITC Dextran
60842-46-8
fluorescein isothiocyanate i hydrochloride
63469-13-6
fluorescein isothiocyanate-phenylglyoxal
116843-39-1
6-FITC
3326-31-6
fluorescein 5-isothiocyanate
27072-45-3
(3S)-3-[[(2S)-6-amino-2-[[(2S)-5-(diaminomethylideneamino)-2-[(3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-yl)carbamothioylamino]pentanoyl]amino]hexanoyl]amino]-4-[[(2S)-1-[[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]amino]-3-methyl-1-oxobutan-2
107865-24-7
4-amino-N-fluorescein isothiocyanate-17-estradiol
82420-81-3
2-(3-hydroxy-6-oxoxanthen-9-yl)-5-isothiocyanatobenzoic acid
1173-43-9
N-benzyl-5-methyl-1-(thiazol-2-yl)-1H-1,2,3-triazole-4-carboxamide
1251622-61-3
(5-methyl-1-(5-methylthiazol-2-yl)-1H-1,2,3-triazol-4-yl)(morpholino)methanone
1251686-14-2
5-methyl-1-(5-methylthiazol-2-yl)-N-(2-(trifluoromethoxy)benzyl)-1H-1,2,3-triazole-4-carboxamide
1251576-37-0
1-(4,5-dimethyl-1,3-thiazol-2-yl)-5-methyl-N-[(3-phenyl-1,2,4-oxadiazol-5-yl)methyl]-1H-1,2,3-triazole-4-carboxamide
1251689-88-9
N-(2-methoxybenzyl)-5-methyl-1-(4-phenylthiazol-2-yl)-1H-1,2,3-triazole-4-carboxamide
1257547-75-3
5-methyl-1-(4-phenylthiazol-2-yl)-1H-1,2,3-triazole-4-carboxamide
1251697-31-0
5-methyl-N-(2-(6-oxopyridazin-1(6H)-yl)ethyl)-1-(4-phenylthiazol-2-yl)-1H-1,2,3-triazole-4-carboxamide
1251686-17-5
(4-(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)piperazin-1-yl)(5-(furan-2-yl)isoxazol-3-yl)methanone
1257550-89-2
1-(4-(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)piperazin-1-yl)-2-(4-(isopropylsulfonyl)phenyl)ethanone
1251632-51-5
(2-bromo-5-methoxyphenyl)(4-(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)piperazin-1-yl)methanone
1251560-97-0
Chemsrc provides Fluorescein isothiocyanate (Spiro Form)(CAS#:18861-78-4) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Fluorescein isothiocyanate (Spiro Form) are included as well.>> amp version: Fluorescein isothiocyanate (Spiro Form)

Home | MSDS/SDS Database Search | Journals | Product Classification | Biologically Active Compounds | Selling Leads | About Us | Disclaimer

Copyright © 2024 ChemSrc All Rights Reserved