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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Paracetamol, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Paracetamol 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 Paracetamol-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.

Paracetamol Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Acetaminophen-d3 Sulfate Stable Isotopes CS-T-46983 1020718-78-8 In Stock
Acetaminophen-d3 Stable Isotopes CS-O-02696 60902-28-5 In Stock
N-nitrozo-paracetamol D3 Stable Isotopes CS-O-49372 146897-60-1 (Unlabelled) Enquire
Paracetamol Mercapturate-D3 Stable Isotopes CS-T-97232 Not Available Enquire
Paracetamol-d4 Stable Isotopes CS-T-46981 64315-36-2 In Stock
3-Hydroxyacetaminophen D3 Stable Isotopes CS-T-55734 1020719-47-4 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Paracetamol API CS-O-30999 103-90-2 In Stock
Paracetamol 1.0 mg/ml in Methanol API CS-O-58135 103-90-2 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4,4'-Iminodiphenol Impurity CS-T-93314 1752-24-5 In Stock
Acetaminophen Dimer Impurity CS-T-00266 98966-14-4 In Stock
Paracetamol EP Impurity A Impurity CS-T-00233 614-80-2 In Stock
Paracetamol EP Impurity B Impurity CS-T-40666 1693-37-4 In Stock
Paracetamol EP Impurity C Impurity CS-M-57017 3964-54-3 In Stock
Paracetamol EP Impurity G Impurity CS-T-26524 34523-34-7 In Stock
Paracetamol EP Impurity H Impurity CS-T-00256 2623-33-8 In Stock
Paracetamol EP Impurity K Impurity CS-O-31123 123-30-8 In Stock
Paracetamol EP Impurity L Impurity CS-EO-01502 2514961-29-4 In Stock
Paracetamol EP Impurity M HCl Impurity CS-EO-03750 1965310-24-0 Enquire
Paracetamol EP impurity-O Impurity CS-O-39904 2575516-61-7 Enquire
Paracetamol Impurity 1 Impurity CS-T-64483 98966-17-7 Enquire
Parahydroxy acetophenone (4-hydroxyacetophenone) Impurity CS-T-26516 99-93-4 In Stock
Acetaminophen Impurity K Hydrochloride (Paracetamol Impurity... Impurity CS-P-07017 51-78-5 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Hydroxy acetophenone Intermediate CS-T-26515 118-93-4 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Paracetamol glucuronide potassium salt Glucuronide CS-W-00381 Not Available Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-((4-aminophenyl)amino)phenol Fine Chemicals CS-O-59919 6358-03-8 Enquire
4-Chloroacetanilide Fine Chemicals CS-BX-00803 539-03-7 In Stock
4-nitrophenol Fine Chemicals CS-O-31141 100-02-7 In Stock
Acetanilide Fine Chemicals CS-O-00902 103-84-4 In Stock
Bis(p-acetylaminophenyl) Ether Fine Chemicals CS-T-49173 3070-86-8 In Stock


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N- nitroso-n-phenylacetamide Nitrosamine CS-T-95838 938-81-8 Enquire
N-Nitroso Paracetamol Nitrosamine CS-EO-02164 146897-60-1 Discontinued
N-Nitroso Paracetamol EP Impurity M Nitrosamine CS-O-52973 ---- Discontinued


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Paracetamol(Acetaminophen) Secondary Standards CS-SS-24003 103-90-2 Enquire
Paracetamol(Acetaminophen) Secondary Standards CS-SS-24003-1GM 103-90-2 In Stock
4-Aminophenol (Acetaminophen Related Compound K) (Paracetamo... Secondary Standards CS-SS-24188-1GM 123-30-8 Enquire
Paracetamol(Acetaminophen) Secondary Standards CS-SS-24003-250MG 103-90-2 Enquire
Paracetamol(Acetaminophen) Secondary Standards CS-SS-24003-10GM 103-90-2 Enquire