5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane

Also known as: 4-Methylbenzeneboronic acid neopentyl glycol ester, 4-Methylphenylboronic acid neopentyl ester, 4-Tolylboronic acid neopentylglycol cyclic ester, p-Tolylboronic acid neopentyl glycol ester, 5,5-Dimethyl-2-(4-methylphenyl)-1,3,2-dioxaborinane, 2-(p-Tolyl)-5,5-dimethyl-1,3,2-dioxaborinane

5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane (CAS 380481-66-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H17BO2 and a molecular weight of 204.07300 g/mol. Key properties include a melting point of 93-95ºC, a boiling point of 303ºC at 760 mmHg, a density of 0.99 g/cm3 and a flash point of 137ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 380481-66-3
Jingsj CID: J-37768-4
Molecular Formula: C₁₂H₁₇BO₂
Molecular Weight: 204.07300 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	93-95ºC
Boiling Point	303ºC at 760 mmHg
Density	0.99 g/cm3
Flash Point	137ºC
Exact Mass	204.13200
PSA	18.46000
LogP	1.76320
Refractive Index	1.493

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane?

The CAS number of 5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane is 380481-66-3.

What are the molecular formula and molecular weight of 5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane?

5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane has molecular formula C12H17BO2 and molecular weight 204.07300 g/mol.

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. "5,5-dimethyl-2-(p-tolyl)-1,3,2-dioxaborinane (CAS 380481-66-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37768-4 (accessed 2026-11-09).

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