Internal Standards

4-Aminophenol-d4

CAS: 70237-44-4

Product No.: D-191

Purity: ≥ 98%

Isotopic Enrichment: ≥ 97% D

Fluorofamide-d4

CAS: N/A

Product No.: D-188

Purity: ≥ 97%

Isotopic Enrichment: ≥ 98% D

Telmisartan-d3

CAS: 1189889-44-8

Product No.: D-187

Purity: ≥ 97%

Isotopic Enrichment: ≥ 98% D

Aceclofenac-d₄

CAS: N/A

Product No.: D-183

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

Nitroso-aceclofenac-d₄

CAS: N/A

Product No.: D-185

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

Aceclofenac-d₂

CAS: N/A

Product No.: D-184

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

N-Nitroso Sarafloxacin-d8

CAS: N/A

Product No.: D-182

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

Sarafloxacin-d8 hydrochloride

CAS: 2733145-07-6 (Hydrochloride) / 1352879-52-7 (Free Base)

Product No.: D-181

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

Nitroso N-Desethyl Oxybutynin-d5

CAS: NA

Product No.: D-178

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

Aminomethylphosphonic acid‑¹³C,¹⁵N,D₂

CAS: 2727464-25-5

Product No.: D-161

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98%

Aminomethylphosphonic acid‑d₂

Product No.: D-162

Purity: ≥ 98%

Isotopic Enrichment: ≥ 98% D

2‑Methyl‑Citric Acid (mixture of diastereomers)

CAS: 6061‑96‑7

Product No.: N-139

Purity: ≥ 95%