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(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane

(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane structure

CAS No.: 136779-26-5

Chemical Name:: (-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane

Synonyms: (S,S)-ME-BPE;1,2-Bis[(2S,5S)-2,5-dimethyl-1-phospholanyl]ethane;(-)-1,2-Bis[(2S,5S)-2,6-dimethyphospholano]ethane;(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane;1,2-Bis[(2S,5S)-2,5-diMethyl-1-phospholanyl]ethane, 97+%;(-)-1,2-Bis((2S,5S)-2,5-diMethylphospholano)ethane (S,S)-Me-BPE;(-)-1,2-Bis[(2S,5S)-2,5-dimethylphospholano]ethane, Kanata purity;(2S,2′S,5S,5′S)-1,1′-(1,2-Ethanediyl)bis[2,5-dimethylphospholane];(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane,98+%(S,S)-Me-BPE;(-)-1,2-Bis[(2S,5S)-2,5-dimethylphospholano]ethane, 97% (S,S-Me-BPE)

CBNumber:: CB7188402

Molecular Formula:: C14H28P2

Molecular Weight:: 258.32

MDL Number:: MFCD01073771

MOL File:: 136779-26-5.mol

MSDS File:: SDS

Last updated:2026-09-12 18:54:44

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(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane Properties

Boiling point	64-67 °C0.06 mm Hg
alpha	-263° ±3° (c 1, hexane)
Density	0.938 g/mL at 25 °C
refractive index	n20/D 1.535
storage temp.	2-8°C, protect from light, stored under nitrogen
form	liquid
color	colorless to pale-yellow
Sensitive	Air Sensitive
FDA UNII	23B6D1OYCY

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS07

Hazard statements

H250-H252-H315-H319-H335

Precautionary statements

P210-P222-P305+P351+P338-P405-P422a-P501a

Hazard Codes

Risk Statements

11-17

Safety Statements

24/25

RIDADR

UN 2845 4.2/PG 1

WGK Germany

HazardClass

4.2

HS Code

29310099

NFPA 704

	4
2		0

(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane price More Price(12)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Strem Chemicals	15-0105	(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane, 98+% (S,S)-Me-BPE 98+%	136779-26-5	100mg	$78	2026-04-30	Buy
Strem Chemicals	15-0105	(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane, 98+% (S,S)-Me-BPE 98+%	136779-26-5	500mg	$287	2026-04-30	Buy
Strem Chemicals	15-0105	(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane, 98+% (S,S)-Me-BPE 98+%	136779-26-5	2g	$917	2026-04-30	Buy
aablocks	AA001291	(2S,2′S,5S,5′S)-1,1′-(1,2-Ethanediyl)bis[2,5-dimethylphospholane] 98+%	136779-26-5	100mg	$132	2026-05-27	Buy
aablocks	AA001291	(2S,2′S,5S,5′S)-1,1′-(1,2-Ethanediyl)bis[2,5-dimethylphospholane] 98+%	136779-26-5	500mg	$378	2026-05-27	Buy

Product number	Packaging	Price	Buy
15-0105	100mg	$78	Buy
15-0105	500mg	$287	Buy
15-0105	2g	$917	Buy
AA001291	100mg	$132	Buy
AA001291	500mg	$378	Buy

(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane Chemical Properties, Uses, Production

Reaction

The DUPHOS family of catalysts is highly efficient for the asymmetric hydrogenation of various substituted acetamidoacrylates and enol acetates yielding products of high enantiomeric excesses. Efficient ligand for the asymmetric hydrogenation of tetrasubstituted enamides. Reactions of 136779-26-5

(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane Preparation Products And Raw materials

Raw materials

Preparation Products

(-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane Suppliers

Global Suppliers ( 34)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40202	62
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
Beijing HwrkChemical Technology Co., Ltd	89508211 18501085097	sales.bj@hwrkchemical.com	China	9407	55
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44850	61
Adamas Reagent, Ltd.	400-6009262 15618770481	yhx@titansci.com	China	14098	59
Thermo Fisher Scientific	800-810-5118	cnchemical@thermofisher.com	China	17752	75
Shandong Ono Chemical Co., Ltd.	0539-6362799 20）		China	9998	58
Shanghai Anyinuo Biomedical Technology Co., Ltd.	021-34625901	420970979@qq.com	China	5982	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 17705817739	info@dycnchem.com	China	52451	58

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
Alfa Aesar	84
Beijing HwrkChemical Technology Co., Ltd	55
Energy Chemical	61
Adamas Reagent, Ltd.	59
Thermo Fisher Scientific	75
Shandong Ono Chemical Co., Ltd.	58
Shanghai Anyinuo Biomedical Technology Co., Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58

136779-26-5 ((-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane) Related Search:

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(-)-1,2-Bis((2R,5R)-2,5-diphenylphospholano)ethane(1,5-cyclooctadiene)rhodium (I) tetrafluoroborate (+)-1,2-Bis((2R,5R)-2,5-dimethylphospholano)ethane(cyclooctadiene)rhodium (I) tetrafluoroborate

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(-)-1,2-Bis[(2S,5S)-2,5-dimethylphospholano]ethane, Kanata purity (-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane,98+%(S,S)-Me-BPE 1,2-Bis[(2S,5S)-2,5-diMethyl-1-phospholanyl]ethane, 97+% (-)-1,2-Bis[(2S,5S)-2,5-dimethylphospholano]ethane, 97% (S,S-Me-BPE) (-)-1,2-Bis((2S,5S)-2,5-diMethylphospholano)ethane (S,S)-Me-BPE Phospholane, 1,1'-(1,2-ethanediyl)bis[2,5-dimethyl-, (2S,2'S,5S,5'S)- (-)-1,2-Bis((2S,5S)-2,5-dimethylphospholano)ethane (-)-1,2-Bis[(2S,5S)-2,6-dimethyphospholano]ethane (2S,2′S,5S,5′S)-1,1′-(1,2-Ethanediyl)bis[2,5-dimethylphospholane] (S,S)-ME-BPE 1,2-Bis[(2S,5S)-2,5-dimethyl-1-phospholanyl]ethane 136779-26-5 C6H12PCH2CH2PC6H12 C6H12CH2CH2PC6H12 DuPhos/BPE Privileged Ligands Chiral Catalysts, Ligands, and Reagents Asymmetric Synthesis organophosphine ligand