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Key Documents

Safety Information

46951

Sigma-Aldrich

Fluorescein isothiocyanate isomer I

≥97.5% (HPLC)

Synonym(s):

FITC, Fluorescein 5-isothiocyanate

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About This Item

Empirical Formula (Hill Notation):
C21H11NO5S
CAS Number:
Molecular Weight:
389.38
Beilstein:
1407295
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:

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Assay

≥97.5% (HPLC)

form

powder

impurities

≤1.5% Isomer II

mp

>360 °C (lit.)

solubility

acetone: soluble 0.1 g/10 mL

fluorescence

λex 492 nm; λem 518 nm (green)
λex 492 nm; λem 518 nm in 0.1 M phosphate pH 8.0

storage temp.

2-8°C

SMILES string

Oc1ccc2c(Oc3cc(O)ccc3C24OC(=O)c5cc(ccc45)N=C=S)c1

InChI

1S/C21H11NO5S/c23-12-2-5-16-18(8-12)26-19-9-13(24)3-6-17(19)21(16)15-4-1-11(22-10-28)7-14(15)20(25)27-21/h1-9,23-24H

InChI key

MHMNJMPURVTYEJ-UHFFFAOYSA-N

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This Item
PFS23PFS21PFS22
product line

SpheriCal

product line

SpheriCal

product line

SpheriCal

product line

SpheriCal

application(s)

cleaning products
cosmetics
flavors and fragrances
food and beverages
personal care

application(s)

cleaning products
cosmetics
flavors and fragrances
food and beverages
personal care

application(s)

cleaning products
cosmetics
flavors and fragrances
food and beverages
personal care

application(s)

cleaning products
cosmetics
flavors and fragrances
food and beverages
personal care

form

solid

form

solid

form

solid

form

solid

shelf life

expiry date on the label

shelf life

expiry date on the label

shelf life

expiry date on the label

shelf life

expiry date on the label

mol wt

Mr 500-1600 Da (Na+-adduct)

mol wt

Mr 7500-15000 Da (Na & adduct)

mol wt

Mr 1600-3500 Da (Na & adduct)

mol wt

Mr 3500-7500 Da (Na+-adduct)

Application

Reagent for the FITC labeling of proteins; Microsequencing of proteins and peptides (HPLC)

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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