Labelled Impurities
Product Name:
Related CAS:
1156-92-9 (unlabelled)
A labelled impurity of Androstene. Androstene is a steroid hormone which participates in the biosynthesis of testosterone.
Molecular Weight:
Molecular Formula:
Other Impurities

Related Other Impurities Products

CAS 1398065-75-2 (±)-Ketocozole-d4(piperazine-3,3,5,5-d4)(cis-isomers)

(CAS: 1398065-75-2)

One of the isotopic labelled form of (±)-Ketocozole, which could be used as thromboxane synthase and 5-lipoxygenase inhibitor.

Lapatinib Impurity-d6

A labelled impurity of Lapatinib. Lapatinib is an antitumor drug used to treat breast cancer and other solid tumors.

15-Hydroxy lubiprostone-d4

15-Hydroxy lubiprostone-d4 is a labelled impurity of lubiprostone. Lubiprostone is a medication indicated for the treatment of certain types of constipation.

CAS 1185240-22-5 Leflunomide-d4 Metabolite (Teriflunomide-d4)

Leflunomide-d4 Metabolite (Teriflunomide
(CAS: 1185240-22-5)

The active metabolite of Leflunomide, a potent disease-modifying antirheumatic drug used in the treatment of rheumatoid arthritis.

Sulindac Sulfone-d3
(CAS: 250608-67-4)

One of the isotopic labelled forms of Sulindac Sulfone that is effective in anticancer studies.


An isotope labelled of Butamben. Butamben is a local anesthetic.

Prothionamide-d5 Sulfoxide
(CAS: 1329568-86-6)

An isotope labelled metabolite of Protionamide.Protionamide is a drug used in the treatment of tuberculosis and leprosy.

6-Sulfatoxy Melatonin-d4
(CAS: 1309935-98-5)

6-Sulfatoxy Melatonin-d4 is a labelled impurity of Melatonin. Melatonin is a hormone in humans' body to control our sleep.

(CAS: 350482-19-8)

An isotope labelled metabolite of Buprenorphine. Buprenorphine is an opioid used to treat opioid addiction, acute pain, and chronic pain.

Idarubicinol-13C, d3

Idarubicinol-13C, d3 is a labelled nalogue of Idarubicinol.

Lapatinib Impurity-d4

A labelled Lapatinib Impurity.

CAS 1346606-35-6 Desbutyl Lumefantrine D9

Desbutyl Lumefantrine D9
(CAS: 1346606-35-6)

Desbutyl Lumefantrine D9 is the deuterium labeled euterium labeled, which is a metabolite of Lumefantrine.

CAS 1130899-41-0 Ibandronic Acid-d3

Ibandronic Acid-d3
(CAS: 1130899-41-0)

Ibandronic Acid-d3 is a labelled Ibandronic Acid. Ibandronic Acid is a medication indicated for the prevention of osteoporosis in post-menopausal women.

5-Hydroxy Propafenone D5 HCl
(CAS: 1215370-87-8)

The hydrochloride salt form of isotope labelled 5-Hydroxy Propafenone which is a metabolite of Propafenone.

Trimipramine-d3 Maleate
(CAS: 1185245-93-5)

Stable Isotope labelled Trimipramine Maleate. Trimipramine is a tricyclic antidepressant (TCA) usedf for the treatment of depression.

7-Hydroxy Ropinirole-d10

A deuterated Ropinirole impurity. Ropinirole is a D2, D3, and D4 dopamine receptor agonist with highest affinity for D2. It is weakly active at the 5-HT2, and α...

4-Methylamino antipyrine-d3
(CAS: 342821-66-3)

A labelled 4-Formylamino Antipyrine. Antipyrine is commonly used together with Benzocaine to treat pain from inflammations.

Naftazone-d6 beta-D Glucoronide

Labelled Naftazone, which is a vasoprotectant drug used for hemostasis.