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Cresol Red
CAS: 1733-12-6 | C21H18O5S
2D Structure
3D Structure
Loading 3D structure...
Basic Information
CAS Registry Number:
1733-12-6
Molecular Formula:
C21H18O5S
Molecular Mass:
382.44 g/mol
Names and Synonyms:
Cresol Red
Phenol, 4,4′-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl-
o-Cresol, 4,4′-(3H-2,1-benzoxathiol-3-ylidene)di-, S,S-dioxide
o-Cresolsulfonephthalein
Phenol, 4,4′-(3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl-, S,S-dioxide
o-Toluenesulfonic acid, α-hydroxy-α,α-bis(4-hydroxy-m-tolyl)-, γ-sultone
3H-2,1-Benzoxathiole, phenol deriv.
4,4′-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methylphenol]
o-Cresol Red
o-Cresolsulfonphthalein
Cresol red
3′,3′′-Dimethylphenolsulfonephthalein
Cresolsulfophthalein
NSC 7224
Identifiers:
SMILES:
Cc1cc(C2(c3ccc(O)c(C)c3)OS(=O)(=O)c3ccccc32)ccc1O
InChI:
InChI=1S/C21H18O5S/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21/h3-12,22-23H,1-2H3
Key Properties
Melting Point
>300 °C
CAS Common Chemistry
Spectral Data
NMR, IR, and Mass spectral data
1H NMR
13C NMR
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 382.44 g/mol | CAS Common Chemistry |
| 382.43700000000007 g/mol | RDKit | |
| 382.087494676 g/mol | RDKit | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Cresol_Red | CAS Common Chemistry |
| Canonical SMILES | O=S1(=O)OC(C2=CC=C(O)C(=C2)C)(C3=CC=C(O)C(=C3)C)C=4C=CC=CC41 | CAS Common Chemistry |
| InChI | InChI=1S/C21H18O5S/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21/h3-12,22-23H,1-2H3 | CAS Common Chemistry |
| InChI Key | InChIKey=OBRMNDMBJQTZHV-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | >300 °C | CAS Common Chemistry |
| Name | Cresol red | CAS Common Chemistry |
| Cresol Red | CAS Common Chemistry | |
| Heavy Atom Count | 27 | RDKit |
| Hydrogen Bond Acceptors | 5 | RDKit |
| Hydrogen Bond Donors | 2 | RDKit |
| Rotatable Bonds | 2 | RDKit |
| Aromatic Ring Count | 3 | RDKit |
| Topological Polar Surface Area | 83.83 Ų | RDKit |
| LogP | 3.725440000000002 | RDKit |
| Molar Refractivity | 100.28240000000002 | RDKit |
