P5631

Sigma-Aldrich

o-Cresolphthalein Complexone

powder

Synonym(s):
o-Cresolphthalexon, Xylenylphthalein-bisiminodiacetic acid, Metal phthalein, Phthalein purple, o-Cresolphthalein-3′,3′′-bis-methyleneiminodiacetic acid
Empirical Formula (Hill Notation):
C32H32N2O12
CAS Number:
Molecular Weight:
636.60
Beilstein/REAXYS Number:
381994
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47
Pricing and availability is not currently available.

form

powder

Quality Level

application(s)

hematology: suitable
histology: suitable

color

white to off-white

mp

181-185 °C (dec.) (lit.)

solubility

NaOH: 50 mg/mL

Featured Industry

Diagnostic Assay Manufacturing

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

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Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
C M Corns et al.
Annals of clinical biochemistry, 24 ( Pt 4), 345-351 (1987-07-01)
The reasons for the non-linearity of the standard curve for the calcium-cresolphthalein complexone reaction have been investigated. Calcium forms both 1:1 and 2:1 complexes with cresolphthalein complexone; at low calcium concentrations the 1:1 complex predominates and causes non-linearity. At high...
J Toffaletti et al.
Clinical chemistry, 26(11), 1562-1565 (1980-10-01)
We adapted a method for dialyzable calcium from fluorometric detection by use of calcein to a more specific spectrophotometric determination with cresolphthalein complexone. The reagents are available commercially and perform satisfactorily with respect to noise level, drift, stability, and sensitivity....
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...
James H Wible et al.
Radiology, 233(1), 158-164 (2004-09-30)
To measure serum calcium concentration with three different analytic methods after administration of gadoversetamide and three other gadolinium chelates in dogs. Six dogs were injected with 0.1-, 0.3-, 1.0-, and 3.0-mmol/kg doses of gadoversetamide; 1.0-mmol/kg doses of gadodiamide, gadopentetate, and...
Protocols
Suitability for the Qualitative Determination of Calcium with Phthalein Purple (O-Cresophthalein Complexone) using Stannous Chloride
Read More

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