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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Hydroxyindole, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Hydroxyindole impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Hydroxyindole-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Hydroxyindole Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
5-Hydroxyindole-[d5] Stable Isotopes CS-I-00519 916979-23-2 Enquire
5-Hydroxyindole-2,4,6,7-d4-3-acetic-2,2-d2 acid (5-HIAA-D6) Stable Isotopes CS-K-00274 2748469-82-9 Enquire
5-Hydroxyindole-3-acetic Acid D2 Stable Isotopes CS-T-56462 56209-31-5 Enquire
5-Hydroxyindole-3-acetic Acid D5 Stable Isotopes CS-T-56463 81587-11-3 Enquire
5-Hydroxyindole-3-acetic Acid D5 Stable Isotopes CS-T-56461 1219802-93-3 Enquire
5-Hydroxyindole-3-acetic Acid-13C3 Stable Isotopes CS-T-102855 2731515-03-8 Enquire
5-Hydroxyindoleacetic acid-[13C6] Stable Isotopes CS-I-00520 2733322-34-2 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Fluoro-5-hydroxyindole Impurities CS-DV-02787 288386-04-9 Enquire
4-Hydroxyindole Impurities CS-T-27554 2380-94-1 Enquire
5-Hydroxyindole-3-acetic Acid Impurities CS-T-28695 54-16-0 In Stock
JWH-018 6-Hydroxyindole Impurities CS-T-30180 1307803-44-6 Enquire
N-Isopropyl-5,6-dihydroxyindole Impurities CS-O-44519 99855-01-3 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"5,6-Dihydroxyindole" Intermediates CS-AC-09732 3131-52-0 Enquire
3-Formyl-4-hydroxyindole-1-carboxylic acid tert-butyl ester Intermediates CS-AC-01763 404888-00-2 Enquire
3-Hydroxyindole Intermediates CS-T-27552 480-93-3 Enquire
4-Hydroxyindole-3-acetic acid Intermediates CS-O-49854 56395-08-5 Enquire
5-Hydroxyindole Intermediates CS-T-27553 1953-54-4 Enquire
6-Bromo-5-hydroxyindole Intermediates CS-MM-46032 211808-66-1 Enquire
Ethyl 1-acetyl-4-hydroxyindole-6-carboxylate Intermediates CS-ED-38917 885519-06-2 Enquire
Methyl 3-Hydroxyindole-2-carboxylate Intermediates CS-T-34012 31827-04-0 Enquire
N-Acetyl-3-hydroxyindole Intermediates CS-T-47284 33025-60-4 Enquire
N-Acetyl-5-bromo-4-chloro-3-hydroxyindole Intermediates CS-AW-00194 125328-76-9 Enquire
N-Boc-5-hydroxyindole Intermediates CS-AC-09869 434958-85-7 Enquire


Glucuronides

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxyindole O-b-D-Glucuronide Sodium Salt Glucuronides CS-T-104137 Not Available Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
5-Hydroxyindole-3-acetaldehyde Fine Chemicals CS-ED-01686 1892-21-3 Enquire
7-Hydroxyindole Fine Chemicals CS-T-27555 2380-84-9 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-(Tosyl-L-alanyl)-3-hydroxyindole Building Blocks CS-T-62155 101506-88-1 Enquire