3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol

Also known as: 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl-1,1'-spirobi[1H-indene]-6,6'-diol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl-1,1'-spirobi-1H-indene-6,6'-diol, spirobiindane-6,6'-diol, HIV-1 integrase inhibitor 8

3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol (CAS 1568-80-5) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C21H24O2 and a molecular weight of 308.41400 g/mol. Key properties include a melting point of 213-214 °C, a boiling point of 478.5℃ at 760 mmHg, a density of 1.21±0.1 g/cm3(Predicted) and a flash point of 220.4℃. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1568-80-5
Jingsj CID: J-1983433-4
Molecular Formula: C₂₁H₂₄O₂
Molecular Weight: 308.41400 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	213-214 °C
Boiling Point	478.5℃ at 760 mmHg
Density	1.21±0.1 g/cm3(Predicted)
Flash Point	220.4℃
Exact Mass	308.17800
PSA	40.46000
LogP	4.74650
Vapor Pressure	8.84E-10mmHg at 25°C

Activity & Biological Data

Additional Information	[1]. Molteni, et al. A New Class of HIV-1 Integrase Inhibitors: The 3,3,3', 3'-tetramethyl-1,1'-spirobi(indan)-5,5',6,6'-tetrol Family.J Med Chem

Customs & Trade Information

HS Code	2906299090
Summary	2906299090 other aromatic alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol?

The CAS number of 3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol is 1568-80-5.

What are the molecular formula and molecular weight of 3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol?

3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol has molecular formula C21H24O2 and molecular weight 308.41400 g/mol.

What are the upstream and downstream products of 3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol?

For 3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol, Upstream Products: Bisphenol A, Perfluoroheptanesulfonic acid, Diphenyl ether.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "3,3,3',3'-tetramethyl-1,1'-spirobiindane-6,6'-diol (CAS 1568-80-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1983433-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.