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ChemicalBook >> CAS DataBase List >> Fluorescein-PEG4-Acid

Fluorescein-PEG4-Acid

$89 - $1612
Product name: Fluorescein-PEG4-Acid
CAS: 1807518-76-8
MF: C32H34N2O11S
MW: 654.68
EINECS:
MDL Number:MFCD23726637
Synonyms:Fluorescein-PEG4-Acid;5-FITC-PEG4-COOH;Flurescein-PEG4-COOH;4,7,10,13-Tetraoxa-16-azaheptadecanoic acid, 17-[(3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl)amino]-17-thioxo-;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;5-FITC-PEG4-PA;FITC-PEG4-PA

Price17 Properties Safety Information Description

17 prices

Selected condition：

Brand

aablocks
ACHEMBLOCK
American Custom Chemicals Corporation
Biosynth
BroadPharm
ChemScene

Package

1MG
5MG
10MG
25mg
50mg
100mg
250mg
1g

Manufactureraablocks
Product numberAA00I050
Product description1-((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 95%
Packaging100mg
Price$137
Updated2026-05-29
Buy

Manufactureraablocks
Product numberAA00I050
Product description1-((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 95%
Packaging50mg
Price$89
Updated2026-05-29
Buy

ManufacturerACHEMBLOCK
Product numberAD287216
Product description5-FITC-PEG4-COOH 98%
Packaging1MG
Price$240
Updated2026-05-27
Buy

ManufacturerACHEMBLOCK
Product numberAD287216
Product description5-FITC-PEG4-COOH 98%
Packaging10MG
Price$865
Updated2026-05-27
Buy

ManufacturerACHEMBLOCK
Product numberAD287216
Product description5-FITC-PEG4-COOH 98%
Packaging5MG
Price$575
Updated2026-05-27
Buy

ManufacturerAmerican Custom Chemicals Corporation
Product numberFRL0001930
Product descriptionFLUORESCEIN-PEG4-ACID 95.00%
Packaging5MG
Price$505.67
Updated2021-12-16
Buy

ManufacturerBiosynth
Product numberHXC51876
Product descriptionFluorescein-PEG4-acid
Packaging100mg
Price$1612
Updated2026-06-04
Buy

ManufacturerBiosynth
Product numberHXC51876
Product descriptionFluorescein-PEG4-acid
Packaging50mg
Price$1159.5
Updated2026-06-04
Buy

ManufacturerBroadPharm
Product numberBP-20954
Product descriptionFluorescein-PEG4-Acid 96%
Packaging50mg
Price$560
Updated2021-12-16
Buy

ManufacturerBroadPharm
Product numberBP-20954
Product descriptionFluorescein-PEG4-Acid 96%
Packaging25mg
Price$360
Updated2021-12-16
Buy

ManufacturerBroadPharm
Product numberBP-20954
Product descriptionFluorescein-PEG4-Acid 96%
Packaging250mg
Price$980
Updated2021-12-16
Buy

ManufacturerChemScene
Product numberCS-0077707
Product descriptionFluorescein-PEG4-acid ≥98%
Packaging1g
Price$960
Updated2026-06-04
Buy

ManufacturerChemScene
Product numberCS-0077707
Product descriptionFluorescein-PEG4-acid ≥98%
Packaging1g
Price$960
Updated2026-06-04
Buy

ManufacturerChemScene
Product numberCS-0077707
Product descriptionFluorescein-PEG4-acid ≥98%
Packaging100mg
Price$173
Updated2026-06-04
Buy

ManufacturerChemScene
Product numberCS-0077707
Product descriptionFluorescein-PEG4-acid ≥98%
Packaging100mg
Price$173
Updated2026-06-04
Buy

ManufacturerChemScene
Product numberCS-0077707
Product descriptionFluorescein-PEG4-acid ≥98%
Packaging250mg
Price$328
Updated2026-06-04
Buy

Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
aablocks	AA00I050	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 95%	100mg	$137	2026-05-29	Buy
aablocks	AA00I050	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 95%	50mg	$89	2026-05-29	Buy
ACHEMBLOCK	AD287216	5-FITC-PEG4-COOH 98%	1MG	$240	2026-05-27	Buy
ACHEMBLOCK	AD287216	5-FITC-PEG4-COOH 98%	10MG	$865	2026-05-27	Buy
ACHEMBLOCK	AD287216	5-FITC-PEG4-COOH 98%	5MG	$575	2026-05-27	Buy
American Custom Chemicals Corporation	FRL0001930	FLUORESCEIN-PEG4-ACID 95.00%	5MG	$505.67	2021-12-16	Buy
Biosynth	HXC51876	Fluorescein-PEG4-acid	100mg	$1612	2026-06-04	Buy
Biosynth	HXC51876	Fluorescein-PEG4-acid	50mg	$1159.5	2026-06-04	Buy
BroadPharm	BP-20954	Fluorescein-PEG4-Acid 96%	50mg	$560	2021-12-16	Buy
BroadPharm	BP-20954	Fluorescein-PEG4-Acid 96%	25mg	$360	2021-12-16	Buy
BroadPharm	BP-20954	Fluorescein-PEG4-Acid 96%	250mg	$980	2021-12-16	Buy
ChemScene	CS-0077707	Fluorescein-PEG4-acid ≥98%	1g	$960	2026-06-04	Buy
ChemScene	CS-0077707	Fluorescein-PEG4-acid ≥98%	1g	$960	2026-06-04	Buy
ChemScene	CS-0077707	Fluorescein-PEG4-acid ≥98%	100mg	$173	2026-06-04	Buy
ChemScene	CS-0077707	Fluorescein-PEG4-acid ≥98%	100mg	$173	2026-06-04	Buy
ChemScene	CS-0077707	Fluorescein-PEG4-acid ≥98%	250mg	$328	2026-06-04	Buy

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Properties

Boiling point :873.4±75.0 °C(Predicted)
Density :1.49±0.1 g/cm3(Predicted)
solubility :Soluble in Water, DMSO, DMF, DCM
pka :4.28±0.10(Predicted)

Safety Information

Symbol(GHS):

Signal word:

Warning

Hazard statements:

Code	Hazard statements	Hazard class	Category	Signal word	P-Codes
H302	Harmful if swallowed	Acute toxicity,oral	Category 4	Warning	P264, P270, P301+P312, P330, P501
H315	Causes skin irritation	Skin corrosion/irritation	Category 2	Warning	P264, P280, P302+P352, P321,P332+P313, P362
H319	Causes serious eye irritation	Serious eye damage/eye irritation	Category 2A	Warning	P264, P280, P305+P351+P338,P337+P313P

Precautionary statements:

P264	Wash hands thoroughly after handling.
P264	Wash skin thouroughly after handling.
P270	Do not eat, drink or smoke when using this product.
P280	Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352	IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P332+P313	IF SKIN irritation occurs: Get medical advice/attention.
P337+P313	IF eye irritation persists: Get medical advice/attention.
P501	Dispose of contents/container to..…

Description

Fluorescein-PEG4-Acid is a xanthene dye with excitation/emmission maximum 494/517 nm and a free terminal carboxyl acid. Terminal carboxylic acid can react with primary amine groups in the presence of of activators (e.g. EDC, or HATU) to form a stable amide bond. It be used as quantum yield standard. Hydophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.

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Fluorescein-PEG4-Acid

Properties

Safety Information

Description

Related product price

Suppliers and manufacturers