Skip to Content
Merck
CN

Key Documents

View All Documentation

P5631

o-Cresolphthalein Complexone

powder

Synonym(s):

o-Cresolphthalein-3′,3′′-bis-methyleneiminodiacetic acid, o-Cresolphthalexon, Metal phthalein, Phthalein purple, Xylenylphthalein-bisiminodiacetic acid

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Empirical Formula (Hill Notation):
C32H32N2O12
CAS Number:
2411-89-4
Molecular Weight:
636.60
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24898682
EC Number:
219-318-8
Beilstein/REAXYS Number:
381994
MDL number:
MFCD00005911
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

form

powder

Quality Level

200

technique(s)

titration: suitable

color

white to off-white

mp

181-185 °C (dec.) (lit.)

solubility

methanol: 1 mg/mL

suitability

suitable for determination of calcium

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cc1cc(cc(CN(CC(O)=O)CC(O)=O)c1O)C2(OC(=O)c3ccccc23)c4cc(C)c(O)c(CN(CC(O)=O)CC(O)=O)c4

InChI

1S/C32H32N2O12/c1-17-7-21(9-19(29(17)43)11-33(13-25(35)36)14-26(37)38)32(24-6-4-3-5-23(24)31(45)46-32)22-8-18(2)30(44)20(10-22)12-34(15-27(39)40)16-28(41)42/h3-10,43-44H,11-16H2,1-2H3,(H,35,36)(H,37,38)(H,39,40)(H,41,42)

InChI key

IYZPEGVSBUNMBE-UHFFFAOYSA-N

General description

o-Cresolphthalein Complexone is a pH indicator dye commonly used for the calorimetric determination of calcium in serum.

Application

o-Cresolphthalein Complexone has been used in the estimation of calcium in serum samples based on the reaction of Ca2+ with o-cresolphthalein complexone in an alkaline solution.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBT5585
SHBT6631
WXBF7060V
0000477666
0000477687

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

D H Patterson et al.
Journal of chromatography. A, 662(2), 389-395 (1994-02-25)
Electrophoretically mediated microanalysis (EMMA) was used for the determination of calcium. The faster analyte zone containing the calcium was injected spatially behind a slower zone of o-cresolphthalein complexone in a capillary electrophoresis based system. Upon application of the electric field
B Aghabeigi et al.
International journal of oral and maxillofacial surgery, 31(6), 646-649 (2003-01-11)
Saline aspirates have been commonly used in the biochemical investigations of temporomandibular joint (TMJ) pathology. However, due to presence of adhesions in the diseased temporomandibular joint, full equilibration between the injected saline and the synovial fluid may not be achieved
C M Corns
Annals of clinical biochemistry, 27 ( Pt 2), 152-155 (1990-03-01)
The spectral interference caused by haemoglobin in the calcium-cresolphthalein complexone reaction was investigated. The results show that the nature of the haemoglobin derivative in the reaction mixture influences the degree of interference; in turn, the derivative formed depends on the
View All Related Papers

Global Trade Item Number

SKUGTIN
P5631-10G04061835347988
P5631-1G04061835347995
P5631-100G04061834392101
P5631-5G04061835348008
P5631-25G04061832343976