Fluorescein 6-isothiocyanate (isomer II)
荧光素-6-异硫氰酸酯 (同分异构体II)
Also known as: 6-FITC, 6-Isothiocyanatofluorescein, FITC isomer II, Fluorescein 6-isothiocyanate isomer II, Fluorescein 6-isothiocyanate, 3',6'-dihydroxy-6-isothiocyanato-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one, FITC 'ISOMER II', FLUORESCEIN 6-ISOTHIOCYANATE, ISOMER 2, FLUORESCEIN ISOTHIOCYANATE (ISOMER II)
Fluorescein 6-isothiocyanate (isomer II) (CAS 18861-78-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H11NO5S and a molecular weight of 389.381 g/mol. It is also known as 6-FITC, 6-Isothiocyanatofluorescein and FITC isomer II. Key properties include a boiling point of 719.1±60.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 388.7±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18861-78-4
- Jingsj CID
- J-1960812-7
- Molecular Formula
- C21H11NO5S
- Chinese Name
- 荧光素-6-异硫氰酸酯 (同分异构体II)
- Molecular Weight
- 389.381 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 719.1±60.0 °C at 760 mmHg |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 388.7±32.9 °C |
Frequently Asked Questions
What is the CAS number of Fluorescein 6-isothiocyanate (isomer II)?
The CAS number of Fluorescein 6-isothiocyanate (isomer II) is 18861-78-4.
What are the molecular formula and molecular weight of Fluorescein 6-isothiocyanate (isomer II)?
Fluorescein 6-isothiocyanate (isomer II) has molecular formula C21H11NO5S and molecular weight 389.381 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Fluorescein 6-isothiocyanate (isomer II) (CAS 18861-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1960812-7 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.