SPhos

CAS 657408-07-6C26H35O2P1410.5 g/mol1

As of October 2026, the China regional price index for SPhos (CAS 657408-07-6) at 98% purity is $5.82 per 5 g, the median of 14 sources. The US regional index for the same specification and package is $26.30, from 1 source. These are research reference indexes in USD, not supplier quotations. SPhos is also known as 2-Dicyclohexylphosphino-2',6'-dimethoxybiphenyl, Buchwald phosphine ligands, sphos phosphine ligand-, Phosphine, dicyclohexyl(2',6'-dimethoxy(1,1'-biphenyl)-2-yl)-, Phosphine, dicyclohexyl(2',6'-dimethoxy[1,1'-biphenyl]-2-yl)-, S-Phos.

Review safety sources. Verify before use.

Market Intelligence Snapshot

Market Intelligence Snapshot

98% · 5 g · Regional reference indexes

US Regional Index
$26.30

Per 5 g basis

China Regional Index
$5.82

Per 5 g basis

Regional Gap
77.9%

$20.48 less in China

Updated Oct 13, 2026 · Reference indexes, not supplier quotations

Calculation evidence & references
US index evidence · regional-median-v11 observations · 1 eligible suppliers · calculated Oct 13, 2026
China index evidence · regional-median-v114 observations · 14 eligible suppliers · calculated Oct 13, 2026
Public market reference channelsAlibaba.com ↗Amazon Business ↗How calculated ↗

Platform links identify public market channels. Exact supplier identities remain private; each displayed value is a GrapeCat Chem regional index, not a platform quote.

12-Month Regional Index History

Confidence: LIMITEDFreshness: Oct 13, 2026

USD-normalized · 5 g comparison basis

Compressed price scale · omitted empty range: 6–26.1

View exact monthly observations →
Latest six exact monthly observations
RegionOct26
US26.3
CN5.8
Exact monthly observations (1)
Exact monthly observations
USChina
26.300000005.82000000

Published 1y index history · regional-median-v1 · basis 5 g · Methodology ↗

Structure, sources & questions
2D molecular structure of SPhos, CAS 657408-07-6

PubChem CID pubchem:11269872 1

Safety & regulatory sourcesReference sources

Review source records and requirements before use.

Available Specifications & Package Bases

Available Specifications & Package Bases

Normalized specification and package facts from eligible technical documents; source-specific supplier promotion remains private. Each package is an independent research basis. How calculated ↗

98%
5 g
Current basis
US
$26.30
China
$5.82
Gap
77.9%
$20.48 less in China

regional-median-v1 · 1/14 US/CN observations · calculated Oct 13, 2026

99%
5 g
View prices
US
N/A
China
$4.33
Gap
N/A

regional-median-v1 · —/3 US/CN observations · calculated Oct 13, 2026

99%
10 g
View prices
US
N/A
China
$8.67
Gap
N/A

regional-median-v1 · —/3 US/CN observations · calculated Oct 13, 2026

99%
25 g
View prices
US
N/A
China
$19.72
Gap
N/A

regional-median-v1 · —/3 US/CN observations · calculated Oct 13, 2026

99%
50 g
View prices
US
N/A
China
$35.26
Gap
N/A

regional-median-v1 · —/2 US/CN observations · calculated Oct 13, 2026

99%
100 g
View prices
US
N/A
China
$73.51
Gap
N/A

regional-median-v1 · —/3 US/CN observations · calculated Oct 13, 2026

99%
250 g
View prices
US
N/A
China
$168.09
Gap
N/A

regional-median-v1 · —/2 US/CN observations · calculated Oct 13, 2026

99%
500 g
View prices
US
N/A
China
$350.07
Gap
N/A

regional-median-v1 · —/3 US/CN observations · calculated Oct 13, 2026

99%
1 kg
View prices
US
N/A
China
$683.10
Gap
N/A

regional-median-v1 · —/3 US/CN observations · calculated Oct 13, 2026

98%
1 g
View prices
US
$23.91
China
$4.33
Gap
81.9%
$19.58 less in China

regional-median-v1 · 1/9 US/CN observations · calculated Oct 13, 2026

98%
10 g
View prices
US
N/A
China
$10.31
Gap
N/A

regional-median-v1 · —/5 US/CN observations · calculated Oct 13, 2026

98%
25 g
View prices
US
$57.37
China
$23.75
Gap
58.6%
$33.62 less in China

regional-median-v1 · 1/8 US/CN observations · calculated Oct 13, 2026

Reference Data & Physical Properties

Chemical Reference & Physical Properties

Secondary scientific reference values; unavailable fields remain unfilled.

External identifiers

InChIKey
VNFWTIYUKDMAOP-UHFFFAOYSA-N
PubChem CID
112698721
MDL Number
—
SMILES
COC1=C(C(=CC=C1)OC)C2=CC=CC=C2P(C3CCCCC3)C4CCCCC4

Applicable physical properties

Only source-provided properties applicable to this published basis are shown. Storage and container requirements remain in Safety Summary.

No applicable, independently verified physical-property values are published for this basis.
Sources (1)[1] PubChem CID pubchem:11269872Verified 2026-10-13

Identifiers and synonyms

Synonyms
2-Dicyclohexylphosphino-2',6'-dimethoxybiphenyl, Buchwald phosphine ligands, sphos phosphine ligand-, Phosphine, dicyclohexyl(2',6'-dimethoxy(1,1'-biphenyl)-2-yl)-, Phosphine, dicyclohexyl(2',6'-dimethoxy[1,1'-biphenyl]-2-yl)-, S-Phos
CAS
657408-07-6
Formula
C26H35O2P
Molecular weight
410.5 g/mol
InChIKey
VNFWTIYUKDMAOP-UHFFFAOYSA-N
PubChem CID
11269872

Questions about SPhos

What is the CAS number of SPhos?

The CAS number of SPhos is 657408-07-6. Its molecular formula is C26H35O2P and its molecular weight is 410.5 g/mol.

What is the price index of SPhos?

As of October 2026, the China regional price index for SPhos (CAS 657408-07-6) at 98% purity is $5.82 per 5 g, the median of 14 sources. The US regional index for the same specification and package is $26.30, from 1 source.

Why is the US index higher than the China index for SPhos?

For 98%, 5 g, the China index is 77.9% lower in October 2026. The two indexes are built from different sets of sources in each region; the methodology page explains how listings are assigned to a region and converted to USD. The gap describes observed list prices, not landed cost: duties, freight and handling are not included.

What purities and package sizes are covered?

GrapeCat Chem publishes 12 comparison bases for SPhos; the table on this page lists the index for each purity and package size.

Is this a quotation?

No. GrapeCat Chem does not sell chemicals. The values are research indexes calculated from observed list prices and are not offers, quotations or real-time prices.

Classification

Scientific Sourcing Taxonomy

LigandsBuchwald Ligands
Related Chemical Records

Published records from the authoritative scientific sourcing relation.

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C52H60N2P2
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Research index data only. Regional indexes are not executable quotations. Safety, physical-property, and regulatory references must be independently confirmed.

Data Methodology