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Analytical Chemistry

Products and resources for analytical chemistry workflows, from sample preparation to measurement and quality control. Explore reference materials, solvents, and lab tools (where available) to support chromatography, spectroscopy, and routine analysis.

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Titration and Karl Fischer Titration

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  7. Cresol red indicator
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    Cresol red indicator
    CAS: 1733-12-6 EC Number: 217-064-2 Formula: C21H18O5S Molecular Weight: 382.43
    0.04%(w/v) in water
    ● In Stock — Germany Item #: C196466
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-2-methylphenol
    SMILES
    CC1=C(C=CC(=C1)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4)O)C)O
    InChIKey
    OBRMNDMBJQTZHV-UHFFFAOYSA-N
    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
    Synonyms
    AKOS000813825 | NSC7224 | NSC-7224 | Cresol red indicator | D89243 | BS-43766 | CresolRed | FT-0640840 | CRESOL RED [...
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Frequently Asked Questions

What should I consider when selecting an Analytical Chemistry product?
Define the transformation first, then narrow the Analytical Chemistry listing by reactivity, compatibility with your solvent and temperature window, and scale. Where several grades exist, the higher-purity option is usually worth it for downstream steps that are hard to purify.
Which Analytical Chemistry subcategory should I start with?
Analytical Chemistry is organised into Sample Preparation, Gas Chromatography (GC), Liquid Chromatography（LC）, Thin Layer Chromatography (TLC) and Titration and Karl Fischer Titration, and 4 further subcategories. Pick the subcategory that matches the structural motif or reaction class you need; compounds that fit more than one are cross-listed.
Which quality data should I check before ordering Analytical Chemistry?
Review the lot-specific Certificate of Analysis for the Analytical Chemistry product you have chosen: assay or HPLC purity, identity confirmation by NMR and MS, residual solvents where relevant, and appearance. For reactive or hygroscopic material the storage and handling notes matter as much as the purity figure. All products are supplied for professional research and development use only, and are not for use in humans, animals, diagnostics, or therapy.
Can I search Analytical Chemistry by structure or CAS number?
Yes. Within Analytical Chemistry you can search by CAS number, molecular formula, or SMILES to reach exact structures and close analogs, and filter by functional group, purity grade, and pack size. For pricing, bulk quantities, or account eligibility, contact [email protected].
This application page organizes products around analytical workflows such as sample preparation, chromatography, titration, spectroscopy, NMR, and mass spectrometry. It is especially useful when the goal is to support a method or instrument platform rather than search for a single reagent family. When comparing products for analytical work, look at method compatibility, solvent system, purity, background interference, calibration needs, and sample matrix. Subsections such as GC, LC, TLC, Karl Fischer titration, NMR, atomic spectroscopy, and UV/Vis/IR analysis provide a more targeted path for finding reagents and materials aligned with the technique you use most.
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  7. Gene 4items
  8. Peptide 3items
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Excitation (nm)
  1. Blue Laser(488nm) 2items
  2. Yellow-Green Laser(561nm) 1item
Emission(nm)
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  2. 590nm 1item
Physical form
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Purity
  1. ≥98% 147items
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  45. ≥96%(HPLC)(T) 1item
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  47. ≥97%(GC) 1item
  48. ≥97.5% 1item
  49. ≥98 atom% D,≥95% 1item
  50. ≥98 atom% D,≥97% 1item
  51. ≥98 atom%,≥98% 1item
  52. ≥98%(CP),≥99 atom% ¹³C 1item
  53. ≥98%,≥99 atom% D 1item
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  55. ≥99 atom% D 1item
  56. ≥99.5%(T) 1item
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  59. ≥99.8 atom% D 1item
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  64. ≥99.99% metals basis 1item
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  66. ≥99.999% metals basis 1item
Grade
  1. Analytical standard 796items
  2. Standard for GC 73items
  3. Indicator 56items
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  6. ACS 28items
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  15. for GC/LC 8items
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  26. Biochemical 2items
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  29. for HPLC 2items
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  32. Premium pure 2items
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  38. for Chemiluminescence 1item
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  40. for Fluorescence analysis 1item
  41. for GC derivatization 1item
  42. for HPLC derivatization 1item
  43. for Spectroscopy 1item
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  45. from Synthetic 1item
  46. GR 1item
  47. ISO 1item
  48. NF 1item
  49. Orthorhombic system 1item
  50. Pesticide residue grade 1item
  51. Pharmaceutical grade 1item
  52. PrimorTrace™ 1item
  53. Standard for quantitative NMR 1item
  54. Suitable for plant cell culture 1item
  55. Technical grade 1item
  56. Ultra dry 1item
Price
  1. €0.00 - €433.87 2672items
  2. €433.87 - €867.74 67items
  3. €867.74 - €1,301.61 12items
  4. €1,301.61 - €1,735.48 5items
  5. €1,735.48 - €2,169.35 2items
  6. €2,169.35 - €2,603.22 3items
  7. €3,470.96 - €3,904.83 1item
  8. €3,904.83 - €4,338.70 1item
  9. €4,338.70 - €4,772.56 1item
  10. €5,206.43 - €15,066.47 2items
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