(2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine

(2R)-(-)-1,1-双(4-甲氧基苯基)-3-甲基-1,2-丁二胺

Also known as: (R)-DAIPEN, (R)-1,1-bis(4-methoxyphenyl)-2-isopropylethane-1,2-diamine, (2R)-1,1-bis(4-methoxyphenyl)-3-methylbutane-1,2-diamine, (2R)-(-)-1,1-bis-(4-methoxyphenyl)-3-methyl-1,2-butanediamine

(2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine (CAS 166764-19-8) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C19H26N2O2 and a molecular weight of 314.42200 g/mol. It is also known as (R)-DAIPEN, (R)-1,1-bis(4-methoxyphenyl)-2-isopropylethane-1,2-diamine and (2R)-1,1-bis(4-methoxyphenyl)-3-methylbutane-1,2-diamine. Key properties include a melting point of 78-98ºC, a boiling point of 477.9ºC at 760 mmHg, a density of 1.077g/cm3 and a flash point of 251.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 166764-19-8
Jingsj CID: J-11269-9
Molecular Formula: C₁₉H₂₆N₂O₂
Chinese Name: (2R)-(-)-1,1-双(4-甲氧基苯基)-3-甲基-1,2-丁二胺
Molecular Weight: 314.42200 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	78-98ºC
Boiling Point	477.9ºC at 760 mmHg
Density	1.077g/cm3
Flash Point	251.4ºC
Exact Mass	314.19900
PSA	70.50000
LogP	4.29000
Vapor Pressure	2.69E-09mmHg at 25°C
Refractive Index	1.557

Customs & Trade Information

HS Code	2922299090
Summary	2922299090. other amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine?

The CAS number of (2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine is 166764-19-8.

What are the molecular formula and molecular weight of (2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine?

(2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine has molecular formula C19H26N2O2 and molecular weight 314.42200 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(2R)-(-)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine (CAS 166764-19-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11269-9 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.