o-Cresolphthalein Complexone - ≥97% , CAS No.2411-89-4

CAS: 2411-89-4 Cat. No.: C639657 Molecular Weight: 636.6 Beilstein Registry Number: 381994 EC Number: 219-318-8
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
Diacetylmethane | o-Cresolphthalexon | DTXSID5062392 | Q907634 | FT-0634254 | 1-Butanol, 3-methyl- | Glycine,N,N'-[(3-oxo-1(3H)-isobenzofuranylidene)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)- | Phthalein purple | 3,N-di(carbox
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
C639657-5g
1
$266.90
1g
C639657-1g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$77.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 4 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Diacetylmethane | o-Cresolphthalexon | DTXSID5062392 | Q907634 | FT-0634254 | 1-Butanol, 3-methyl- | Glycine, N, N'-[(3-oxo-1(3H)-isobenzofuranylidene)bis[(6-hydroxy-5-methyl-3, 1-phenylene)methylene]]bis[N-(carboxymethyl)- | Phthalein purple | 3, N-di(carbox
Specifications & Purity
≥97%
Biochemical and Physiological Mechanisms
Alkaline earth metal indicator. Used for colorimetric estimation of calcium in serum.
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥97%
Names and Identifiers
Canonical SmilesCC1=CC(=CC(=C1O)CN(CC(=O)O)CC(=O)O)C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C(=C4)C)O)CN(CC(=O)O)CC(=O)O
IUPAC Name2-[[5-[1-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-5-methylphenyl]-3-oxo-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl]methyl-(carboxymethyl)amino]acetic acid
InChIKeyIYZPEGVSBUNMBE-UHFFFAOYSA-N
INCHI1S/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)
Isomeric SMILES CC1=CC(=CC(=C1O)CN(CC(=O)O)CC(=O)O)C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C(=C4)C)O)CN(CC(=O)O)CC(=O)O
WGK Germany 3
Molecular Weight 636.6
Beilstein 381994
Reaxy-Rn 381994
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=381994&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
SubclassPentacarboxylic acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentPentacarboxylic acids and derivatives
Alternative Parents Alpha amino acids  Phthalides  Benzofuranones  Phenylmethylamines  Ortho cresols  Benzylamines  Toluenes  Aralkylamines  Trialkylamines  Amino acids  Carboxylic acid esters  Lactones  Oxacyclic compounds  Carboxylic acids  Carbonyl compounds  Organic oxides  Hydrocarbon derivatives  Organopnictogen compounds  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Pentacarboxylic acid or derivatives - Alpha-amino acid - Phthalide - Benzofuranone - Isobenzofuranone - Alpha-amino acid or derivatives - Isocoumaran - Benzylamine - O-cresol - Phenylmethylamine - Aralkylamine - Toluene - Phenol - Benzenoid - Monocyclic benzene moiety - Amino acid - Lactone - Carboxylic acid ester - Tertiary aliphatic amine - Tertiary amine - Amino acid or derivatives - Oxacycle - Organoheterocyclic compound - Carboxylic acid - Organic oxygen compound - Carbonyl group - Organic nitrogen compound - Hydrocarbon derivative - Organic oxide - Organopnictogen compound - Amine - Organooxygen compound - Organonitrogen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pentacarboxylic acids and derivatives. These are carboxylic acids containing exactly five carboxyl groups.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

7 results found

Lot NumberCertificate TypeDateItem
D2620228Certificate of AnalysisApr 11, 2026 C639657
D2620229Certificate of AnalysisApr 11, 2026 C639657
E2506102Certificate of AnalysisApr 27, 2025 C639657
E2506103Certificate of AnalysisApr 27, 2025 C639657
D2409032Certificate of AnalysisDec 01, 2023 C639657
K2328396Certificate of AnalysisDec 01, 2023 C639657
K2328403Certificate of AnalysisDec 01, 2023 C639657
Chemical and Physical Properties
SensitivityHeat Sensitive
Melt Point(°C)181°C
Molecular Weight636.600 g/mol
XLogP3-2.000
Hydrogen Bond Donor Count6
Hydrogen Bond Acceptor Count14
Rotatable Bond Count14
Exact Mass636.196 Da
Monoisotopic Mass636.196 Da
Topological Polar Surface Area222.000 Ų
Heavy Atom Count46
Formal Charge0
Complexity1050.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Zhang Lu, Li Yingying, Wei Fang, Liu Hang, Wang Yushuai, Zhao Weiman, Dong Zhiyong, Ma Tao, Wang Qingqing.  (2020)  Transdermal Delivery of Salmon Calcitonin Using a Dissolving Microneedle Array: Characterization, Stability, and In vivo Pharmacodynamics.  AAPS PHARMSCITECH,  22  (1): (1-9).  [PMID:33215299] [10.1208/s12249-020-01865-z]
2. Lan Wang, Cai-Yun Wang, Ying Zhang, Hai-Juan Fu, Yan Gao, Ke-Rui Zhang.  (2019)  Preparation and characterization of solid lipid nanoparticles loaded with salmon calcitonin phospholipid complex.  JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY,      [PMID:] [10.1016/j.jddst.2019.05.045]
3. Mei-Ling Zhang, Xin-Huai Zhao.  (2014)  In Vitro Calcium-Chelating and Platelet Anti-Aggregation Activities of Soy Protein Hydrolysate Modified by the Alcalase-Catalyzed Plastein Reaction.  JOURNAL OF FOOD BIOCHEMISTRY,  38  (3): (374-380).  [PMID:] [10.1111/jfbc.12063]
4. Wang Zihu, Dong Yan, Sui Xiaoxiao, Shao Xingyan, Li Kangshuai, Zhang Hao, Xu Zhenyuan, Zhang Dongzhi.  (2024)  An artificial intelligence-assisted microfluidic colorimetric wearable sensor system for monitoring of key tear biomarkers.  npj Flexible Electronics,  (1): (1-11).  [PMID:] [10.1038/s41528-024-00321-3]
Solution Calculators
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