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Home/Compounds/CAS 1733-12-6
Formula C21H18O5SMW 382.4Research-use catalog entryCOA/SDS by request

Cresol Red

CAS Number: 1733-12-6

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Available Options

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1 kg
Purity
97%
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Loading RDKit molecule structure...
InChIKey: OBRMNDMBJQTZHV-UHFFFAOYSA-NC21H18O5S | MW 382.4

Chemical Absolute Identifiers

CAS Number

1733-12-6

PubChem CID

73013

Molecular Formula

C21H18O5S

Molecular Weight

382.4 g/mol

Exact Mass

382.087495

InChIKey

OBRMNDMBJQTZHV-UHFFFAOYSA-N

IUPAC Name

4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]-2-methylphenol

SMILES String

CC1=C(C=CC(=C1)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4)O)C)O

Physical Properties

No physical property values available.

Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.

Catalog Facts

Structural features

Cresol Red (CAS 1733-12-6) is listed in the Advanced Chemicals portfolio, with molecular formula C21H18O5S and molecular weight 382. 40 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for research building-block and synthetic chemistry workflows.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Applications & Classification

Organic Building BlocksSynthetic ChemistryResearch intermediateCustom synthesis building blockResearch chemical sourcingCustom synthesis and catalog availability reviewCOA, SDS, pricing, and fulfillment workflow

Safety & Handling

PPE

Respiratory protection if needed

First Aid

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  • Rinse mouth with water.

Stability / Reactivity

  • Reactivity and stability.
  • Carbon monoxide, carbon dioxide, sulfur oxides.

Disposal

  • The product.
  • Dispose of remaining and non-recyclable solutions to a licensed company.
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Fire Fighting

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Accidental Release

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  • Use personal protective equipment and emergency procedures.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

For supplier-issued SDS or COA, submit a documentation request.

Safety Reference / SDS Request

Names & Synonyms / External Identifiers

Chemical Name

Cresol Red

Names & Synonyms

o-Cresolsulfonphthaleino-Cresol RedCresolsulfophthaleino-CresolsulfonephthaleinPhenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl-
Show all synonyms
3',3''-DimethylphenolsulfonephthaleinPhenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-3,3-bis(4-hydroxy-3-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxideCresol red indicator4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methylphenol]o-Cresol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)di-, S,S-dioxideCresolRed3,3-Bis(4-hydroxy-3-methylphenyl)benzo[c]1,2-oxathiolene-1,1-dionePhenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl-, S,S-dioxide.alpha.-Hydroxy-.alpha.,.alpha.-bis(4-hydroxy-m-tolyl)-o-toluenesulfonic acid .gamma.-sultonePhenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-, S,S-dioxide4,4'-(1,1-DIOXIDO-3H-2,1-BENZOXATHIOL-3-YLIDENE)BIS(2-METHYLPHENOL)'Cresol Red PowderCRESOL RED [MI]
External Identifiers
EC NUMBER: 217-064-2DSSTOX SUBSTANCE ID: DTXSID8061929CHEBI ID: CHEBI:86218UNII: 839K2R4B8KWIKIDATA ID: Q417497
Experimental Spectrum References
13C NMR Spectra1D NMR Spectra1H NMR SpectraATR-IR Spectra — Forensic Spectral ResearchFTIR SpectraRaman SpectraUV-VIS Spectra

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

What happens after RFQ

  1. 1We review the CAS identity, quantity, and documentation request.
  2. 2We check sourcing options, supplier availability, COA/SDS, purity, pack size, and lead time.
  3. 3We review destination and shipment documentation needs when applicable.
  4. 4We follow up with a quotation or clarification request.

Text Reference Cues

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Non-public related references

Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-, sodium salt (1:1)CAS 62625-29-0
Chlorophenol redCAS 4430-20-0
Bromocresol PurpleCAS 115-40-2
m-Cresol PurpleCAS 2303-01-7
Bromophenol BlueCAS 115-39-9

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

Catalog navigation

Related Catalog Entries

Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.

CAS 62625-29-0Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-, sodium salt (1:1)CAS 4430-20-0Chlorophenol redCAS 115-40-2Bromocresol PurpleCAS 2303-01-7m-Cresol PurpleCAS 115-39-9Bromophenol BlueCAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamateCAS 1005174-17-3(E)-3-(2-Propyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acidCAS 1018125-49-92-(3-Cyclopropyl-6-ethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acidCAS 1018128-07-8Isopropyl 4-chloro-2-methylquinoline-6-carboxylateCAS 1018142-22-76-cyclopropyl-1-(2,2-difluoroethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid

RFQ questions for CAS 1733-12-6

What are the key identifiers for Cresol Red (CAS 1733-12-6)?

Cresol Red is identified by CAS 1733-12-6, with molecular formula C21H18O5S, molecular weight 382.4, InChIKey OBRMNDMBJQTZHV-UHFFFAOYSA-N.

Can I request a COA for CAS 1733-12-6?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for Cresol Red?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 1733-12-6 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

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