33697-81-3 3-Chloro-4-hydroxyphenylacetic acid Benzeneacetic acid, 3-chloro-4-hydroxy- m-Chloro-p-hydroxyphenylacetic acid 3-10-00-00440 (Beilstein Handbook Reference) Acetic acid, (3-chloro-4-hydroxyphenyl)- BRN 2096929 3-Chloro-4-hydroxybenzeneacetic acid (3-Chloro-4-hydroxyphenyl)acetic acid EINECS 251-643-0 4-Hcpa 4-Hydroxy-3-chlorophenylacetic acid Kyselina 3-chlor-4-hydroxyfenyloctova [Czech] VUFB9649 Kyselina 3-chlor-4-hydroxyfenyloctova CAS 33697-81-3

Purity 97%+In StockPharmaceutical Standards
CAS No.33697-81-3
Molecular FormulaC8H13ClO3
Molecular Weight192.64 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

33697-81-3 3-Chloro-4-hydroxyphenylacetic acid Benzeneacetic acid, 3-chloro-4-hydroxy- m-Chloro-p-hydroxyphenylacetic acid 3-10-00-00440 (Beilstein Handbook Reference) Acetic acid, (3-chloro-4-hydroxyphenyl)- BRN 2096929 3-Chloro-4-hydroxybenzeneacetic acid (3-Chloro-4-hydroxyphenyl)acetic acid EINECS 251-643-0 4-Hcpa 4-Hydroxy-3-chlorophenylacetic acid Kyselina 3-chlor-4-hydroxyfenyloctova [Czech] VUFB9649 Kyselina 3-chlor-4-hydroxyfenyloctova CAS 33697-81-3 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

33697-81-3 3-Chloro-4-hydroxyphenylacetic acid Benzeneacetic acid, 3-chloro-4-hydroxy- m-Chloro-p-hydroxyphenylacetic acid 3-10-00-00440 (Beilstein Handbook Reference) Acetic acid, (3-chloro-4-hydroxyphenyl)- BRN 2096929 3-Chloro-4-hydroxybenzeneacetic acid (3-Chloro-4-hydroxyphenyl)acetic acid EINECS 251-643-0 4-Hcpa 4-Hydroxy-3-chlorophenylacetic acid Kyselina 3-chlor-4-hydroxyfenyloctova [Czech] VUFB9649 Kyselina 3-chlor-4-hydroxyfenyloctova (CAS 33697-81-3), molecular formula C8H13ClO3 and molecular weight 192.64 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 33697-81-3 3-Chloro-4-hydroxyphenylacetic acid Benzeneacetic acid, 3-chloro-4-hydroxy- m-Chloro-p-hydroxyphenylacetic acid 3-10-00-00440 (Beilstein Handbook Reference) Acetic acid, (3-chloro-4-hydroxyphenyl)- BRN 2096929 3-Chloro-4-hydroxybenzeneacetic acid (3-Chloro-4-hydroxyphenyl)acetic acid EINECS 251-643-0 4-Hcpa 4-Hydroxy-3-chlorophenylacetic acid Kyselina 3-chlor-4-hydroxyfenyloctova [Czech] VUFB9649 Kyselina 3-chlor-4-hydroxyfenyloctova (C8H13ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 192.64 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC8H13ClO3
Molecular Weight192.64 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityHygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1966
Halogen ContentCl-containing

Related Chloro Standards

Recommended Standards

Why CATO?