Skip to content

Product division

Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

Picrocrocin chemical structure

CAS: 138-55-6
Formula: C₁₆H₂₆O₇
MW: 330.37 g/mol

VQ-040133

Reference Standard

Pidotimod Ethyl Ester chemical structure

Pidotimod Ethyl Ester

CAS: 135124-63-9
Formula: C₁₁H₁₆N₂O₄S
MW: 272.32 g/mol

VQ-023488

Reference Standard

Pidotimod impurity A chemical structure

Pidotimod impurity A

CAS: 14842-41-2
Formula: C₁₀H₁₀N₂O₄
MW: 222.2 g/mol

VQ-027478

Reference Standard

Pidotimod impurity B chemical structure

Pidotimod impurity B

CAS: 72744-67-3
Formula: C₈H₁₀N₂O₂S₂
MW: 230.3 g/mol

VQ-033177

Reference Standard

Pidotimod impurity D chemical structure

Pidotimod impurity D

CAS: 162148-15-4
Formula: C₉H₁₂N₂O₄S
MW: 244.27 g/mol

VQ-027481

Reference Standard

Pidotimod impurity E chemical structure

Pidotimod impurity E

CAS: 162148-16-5
Formula: C₉H₁₂N₂O₄S
MW: 244.27 g/mol

VQ-027480

Reference Standard

Pidotimod impurity X chemical structure

Pidotimod impurity X

CAS: 161771-75-1
Formula: C₉H₁₂N₂O₄S
MW: 244.27 g/mol

VQ-033176

Reference Standard

Pidotimod impurity Y chemical structure

Pidotimod impurity Y

CAS: 161771-76-2
Formula: C₉H₁₀N₂O₃S
MW: 226.25 g/mol

VQ-041478

Reference Standard

Pidotimod WS chemical structure

CAS: 121808-62-6
Formula: C₉H₁₂N₂O₄S
MW: 244.27 g/mol

In stock

Reference Standard

Pilocarpic Acid Sodium Salt chemical structure

Pilocarpic Acid Sodium Salt

CAS: 92598-79-3
Formula: C₁₁H₁₇N₂NaO₃
MW: 248.25 g/mol

VQ-033180

Reference Standard

Pilocarpine Hydrochloride EP Impurity A chemical structure

Pilocarpine Hydrochloride EP Impurity A

CAS: 531-35-1
Formula: C₁₁H₁₆N₂O₂
MW: 208.26 g/mol

VQ-027485

Reference Standard

Pilocarpine Hydrochloride EP Impurity B chemical structure

Pilocarpine Hydrochloride EP Impurity B

CAS: 28406-15-7
Formula: C₁₁H₁₈N₂O₃
MW: 226.27 g/mol

VQ-027484

Reference Standard

Pilocarpine Hydrochloride EP Impurity C Sodium chemical structure

Pilocarpine Hydrochloride EP Impurity C Sodium

CAS: 101769-87-3
Formula: C₁₁H₁₇N₂NaO₃
MW: 248.25 g/mol

VQ-033181

Reference Standard

Pilocarpine Nitrate chemical structure

Pilocarpine Nitrate

CAS: 148-72-1
Formula: C₁₁H₁₇N₃O₅
MW: 271.27 g/mol

VQ-033185

Reference Standard

Pimagedine chemical structure

CAS: 79-17-4
Formula: CH₆N₄
MW: 74.09 g/mol

VQ-048567

Reference Standard

Pimavanserin chemical structure

CAS: 706779-91-1
Formula: C₂₅H₃₄FN₃O₂
MW: 427.6 g/mol

VQ-023490

Reference Standard

Pimavanserin N-Oxide chemical structure

Pimavanserin N-Oxide

CAS: 1134815-71-6
Formula: C₂₅H₃₄FN₃O₃
MW: 443.6 g/mol

VQ-027496

Reference Standard

Pimavanserin tartrate chemical structure

Pimavanserin tartrate

CAS: 706782-28-7
Formula: C₅₄H₇₄F₂N₆O₁₀
MW: 1005.2 g/mol

VQ-027488

Reference Standard

Pimavanserin-d9

Pimavanserin-d9

CAS: 1080492-01-8
Formula: C₂₅H₂₅D₉FN₃O₂
MW: 436.62 g/mol

VQ-041484

Reference Standard

Pimecrolimus chemical structure

CAS: 137071-32-0
Formula: C₄₃H₆₈ClNO₁₁
MW: 810.4 g/mol

VQ-027497

Reference Standard

Pimecrolimus Triene Analog chemical structure

Pimecrolimus Triene Analog

CAS: 148147-41-5
Formula: C₄₃H₆₇NO₁₁
MW: 774 g/mol

VQ-027498

Reference Standard

Pimobendan EP Impurity A chemical structure

Pimobendan EP Impurity A

CAS: 2138391-23-6
Formula: C₁₉H₁₈N₂O₄
MW: 338.4 g/mol

VQ-023494

Reference Standard

Pimobendan EP Impurity B chemical structure

Pimobendan EP Impurity B

CAS: 74149-74-9
Formula: C₁₉H₂₀N₄O₃
MW: 352.4 g/mol

VQ-023495

Reference Standard

Pimozide chemical structure

CAS: 2062-78-4
Formula: C₂₈H₂₉F₂N₃O
MW: 461.5 g/mol

VQ-027500

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.

Request a quote Contact sales