ChemicalBook >> CAS DataBase List >>racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran]

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran]

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] structure

CAS No.: 556797-94-5

Chemical Name:: racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran]

Synonyms: SPANphos;4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[chroman]-8,8'-diylbis(diphenylphosphane);racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran;racemic-8,8''-Bis(diphenylphosphino)-3,3'',4,4''-tetrahydro-4,4,4'',4'',6,6''-hexamethyl-2,2''-spirobi[2H-1-benzopyran];Phosphine, 1,1'-(3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran]-8,8'-diyl)bis[1,1-diphenyl-;raceMic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexaMethyl-2,2'-spirobi[2H-1-benzopyran] SPANphos;racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran], min. 95% SPANphos

CBNumber:: CB72528394

Molecular Formula:: C47H46O2P2

Molecular Weight:: 704.81

MDL Number:: MFCD18827638

MOL File:: 556797-94-5.mol

MSDS File:: SDS

Last updated:2026-05-28 03:51:06

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racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] Properties

Boiling point	766.7±60.0 °C(Predicted)
form	Powder
color	white

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H335-H315-H319
Precautionary statements	P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] price More Price(4)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Strem Chemicals	15-5165	racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran], min. 95% SPANphos min.95%	556797-94-5	100mg	$119	2026-04-30	Buy
Strem Chemicals	15-5165	racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran], min. 95% SPANphos min.95%	556797-94-5	500mg	$475	2026-04-30	Buy
aablocks	AA00DD2A	racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] min.95%	556797-94-5	100mg	$180	2026-05-28	Buy
aablocks	AA00DD2A	racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] min.95%	556797-94-5	500mg	$599	2026-05-28	Buy

Product number	Packaging	Price	Buy
15-5165	100mg	$119	Buy
15-5165	500mg	$475	Buy
AA00DD2A	100mg	$180	Buy
AA00DD2A	500mg	$599	Buy

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] Chemical Properties,Uses,Production

Uses

A binucleating diphosphine ligand used as a trans-spanning ligand which rigidly links mutually trans coordination sites via phosphorous atoms separated by a large distance to form a cavity over the face of square planar mono and di-metallic complexes, e.g. in MCl2(SPANphos) (M = Pd, Pt), Rh2(µ-Cl)2(CO)2(SPANphos), the latter useful in, for example, the homogeneous catalytic carbonylation of methanol to acetic acid.

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] Preparation Products And Raw materials

Raw materials

Preparation Products

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran] Suppliers

Global( 10)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29626	60
Aikon International Limited	025-58859352 15955137747	sales01@aikonchem.com	China	16021	58
Shanghai Anyinuo Biomedical Technology Co., Ltd.	021-34625901	420970979@qq.com	China	5978	58
Shenzhen Polymeri Biochemical Technology Co., Ltd.	+86-400-002-6226	sales@rrkchem.com	China	57336	58
Changzhou anjie new material technology co., LTD	17712318617	energyscientific@163.com	China	22	58
Shaanxi Didu Pharmaceutical Co., Ltd.	029-81124775 17791530730	1079@dideu.com	China	10000	58
Aladdin Scientific		tp@aladdinsci.com	United States	50089	58

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Capot Chemical Co.,Ltd.	60
Aikon International Limited	58
Shanghai Anyinuo Biomedical Technology Co., Ltd.	58
Shenzhen Polymeri Biochemical Technology Co., Ltd.	58
Changzhou anjie new material technology co., LTD	58
Shaanxi Didu Pharmaceutical Co., Ltd.	58
Aladdin Scientific	58

556797-94-5(racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran])Related Search:

(+)-1,13-Bis[di(4-Methylphenyl)phosphino]-(5aR,8aR,14aR)-5a,6,7,8,8a,9-hexahydro-5H-[1]benzopyrano[3,2-d]xanthene (-)-1,13-Bis(diphenyl)phosphino-(5aS,8aS,14aS)-5a,6,7,8,8a,9-hexahydro-5H-[1]benzopyrano [3,2-d]xanthene (+)-1,13-Bis(diphenyl)phosphino-(5aR,8aR,14aR)-5a,6,7,8,8a,9-hexahydro-5H-[1]benzopyrano [3,2-d]xanthene, 97% (R,R,R)-(+)-Ph-SKP Phosphine, diphenyl(3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran]-8-yl)- (4,4,4',4',6,6'-Hexamethyl-2,2'-spirobi[chroman]-8,8'-diyl)bis(diethylphosphine)

(-)-1,13-Bis[di(4-methylphenyl)phosphino]-(5aS,8aS,14aS)-5a,6,7,8,8a,9-hexahydro-5H-[1]benzopyrano[3,2-d]xanthene, 97% (S,S,S)-(-)-Tol-SKP

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racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran], min. 95% SPANphos raceMic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexaMethyl-2,2'-spirobi[2H-1-benzopyran] SPANphos 4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[chroman]-8,8'-diylbis(diphenylphosphane) Phosphine, 1,1'-(3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran]-8,8'-diyl)bis[1,1-diphenyl- racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran racemic-8,8''-Bis(diphenylphosphino)-3,3'',4,4''-tetrahydro-4,4,4'',4'',6,6''-hexamethyl-2,2''-spirobi[2H-1-benzopyran] SPANphos 556797-94-5 C47H46O2P2