Chemicals starting with “O”

787 products in alphabetical order with CAS numbers and molecular formulas.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Reference Standard

Olpadronic Acid

CAS: 63132-39-8
Formula: C₅H₁₅NO₇P₂
MW: 263.12 g/mol

VQ-043776

Reference Standard

Olsalazine EP Impurity A

CAS: 2749969-12-6
Formula: C₁₅H₁₂N₂O₆
MW: 316.26 g/mol

VQ-032250

Reference Standard

Olsalazine EP Impurity B

CAS: 752188-68-4
Formula: C₁₄H₁₀N₂O₆
MW: 302.24 g/mol

VQ-027007

Reference Standard

Olsalazine EP Impurity E

CAS: 2749969-19-3
Formula: C₁₅H₁₂N₂O₈S
MW: 380.3 g/mol

VQ-032251

Reference Standard

Olsalazine Sodium - Impurity C

CAS: 259151-72-9
Formula: C₁₃H₁₀N₂O₄
MW: 258.23 g/mol

VQ-027008

Reference Standard

Olsalazine Sodium - Impurity D

CAS: 93964-55-7
Formula: C₁₄H₉ClN₂O₅
MW: 320.68 g/mol

VQ-027009

Reference Standard

Olsalazine Sodium Salt

CAS: 6054-98-4
Formula: C₁₄H₈N₂Na₂O₆
MW: 346.2 g/mol

VQ-027006

Reference Standard

Olutasidenib

CAS: 1887014-12-1
Formula: C₁₈H₁₅ClN₄O₂
MW: 354.8 g/mol

VQ-045230

Reference Standard

Omadacycline

CAS: 389139-89-3
Formula: C₂₉H₄₀N₄O₇
MW: 556.6 g/mol

VQ-027010

Reference Standard

Omadacycline Tosylate

CAS: 1075240-43-5
Formula: C₃₆H₄₈N₄O₁₀S
MW: 728.9 g/mol

VQ-032258

Reference Standard

Omadacycline-D9

CAS: 2272886-41-4
Formula: C₂₉H₄₀N₄O₇
MW: 565.7 g/mol

VQ-038756

Reference Standard

Omarigliptin (MK-3102)

CAS: 1226781-44-7
Formula: C₁₇H₂₀F₂N₄O₃S
MW: 398.4 g/mol

VQ-038757

Reference Standard

Omaveloxolone

CAS: 1474034-05-3
Formula: C₃₃H₄₄F₂N₂O₃
MW: 554.7 g/mol

VQ-032259

Reference Standard

Ombitasvir

CAS: 1258226-87-7
Formula: C₅₀H₆₇N₇O₈
MW: 894.1 g/mol

VQ-038758

IP/BP/USP

Omeprazole

CAS: 73590-58-6
Formula: C₁₇H₁₉N₃O₃S
MW: 345.4 g/mol

VQ-004202

Reference Standard

Omeprazole 4-Desmethyl Impurity

CAS: 301669-82-9
Formula: C₁₆H₁₇N₃O₃S
MW: 331.4 g/mol

VQ-007217

Omeprazole Acid Methyl Ester

CAS: 120003-83-0
Formula: C₁₈H₁₉N₃O₅S
MW: 389.4 g/mol

VQ-049320

Reference Standard

Omeprazole Desmethyl pyridine impurity

CAS: 124473-15-0
Formula: C₁₆H₁₇N₃O₃S
MW: 331.4 g/mol

VQ-049322

Reference Standard

Omeprazole Desmethyl Sulphide Impurity

CAS: 103876-98-8
Formula: C₁₆H₁₇N₃O₂S
MW: 315.4 g/mol

In stock

Reference Standard

Omeprazole dibenzimidazole Impurity

CAS: 2451927-89-0
Formula: C₁₇H₁₇N₃O₃
MW: 311.34 g/mol

VQ-038766

Reference Standard

Omeprazole EP impurity F & G Mixture

CAS: 125656-82-8
Formula: C₁₆H₁₃N₃O₂S
MW: 311.4 g/mol

In stock

Reference Standard

Omeprazole EP Impurity G

CAS: 125656-83-9
Formula: C₁₆H₁₃N₃O₂S
MW: 311.4 g/mol

VQ-006557

Reference Standard

Omeprazole EP impurity I

CAS: 158812-85-2
Formula: C₁₇H₁₉N₃O₅S
MW: 377.4 g/mol

VQ-023337

Reference Standard

Omeprazole EP Impurity XI

CAS: 86604-75-3
Formula: C₉H₁₃Cl₂NO
MW: 222.11 g/mol

In stock

Reference Standard

Omeprazole Impurity 24

CAS: 2451927-87-8
Formula: C₁₇H₁₇N₃O₂S
MW: 327.4 g/mol

VQ-038765

Reference Standard

Omeprazole Impurity 26

CAS: 2451927-94-7
Formula: C₁₆H₁₇N₃O₂
MW: 283.32 g/mol

VQ-049318

Reference Standard

Omeprazole Impurity 27

CAS: 2451927-95-8
Formula: C₁₆H₁₇N₃O₃
MW: 299.3 g/mol

VQ-049317

Reference Standard

Omeprazole Impurity 63

CAS: 149367-83-9
Formula: C₈H₈N₂OS
MW: 180.23 g/mol

VQ-038768

Reference Standard

Omeprazole Impurity D

CAS: 88546-55-8
Formula: C₁₇H₁₉N₃O₄S
MW: 361.4 g/mol

In stock

Reference Standard

Omeprazole Impurity E

CAS: 176219-04-8
Formula: C₁₇H₁₉N₃O₄S
MW: 361.4 g/mol

In stock

Reference Standard

Omeprazole Impurity H

CAS: 863029-89-4
Formula: C₁₆H₁₆ClN₃O₂S
MW: 349.8 g/mol

In stock

Reference Standard

Omeprazole Magnesium

CAS: 95382-33-5
Formula: C₃₄H₃₆MgN₆O₆S₂
MW: 713.1 g/mol

VQ-038759

Reference Standard

Omeprazole N-Methyl 5-Methoxy Analog

CAS: 89352-76-1
Formula: C₁₈H₂₁N₃O₃S
MW: 359.4 g/mol

In stock

Reference Standard

Omeprazole N-Methyl 6-Methoxy Analog

CAS: 784143-42-6
Formula: C₁₈H₂₁N₃O₃S
MW: 359.4 g/mol

VQ-013678

Reference Standard

Omeprazole N-Methyl 6-Methoxy Thiol Impurity

CAS: 1526768-06-8
Formula: C₉H₁₀N₂OS
MW: 194.26 g/mol

VQ-038761

Reference Standard

Omeprazole N-Oxide (R-Isomer)

CAS: 2180814-73-5
Formula: C₁₇H₁₉N₃O₄S
MW: 361.42 g/mol

In stock

Reference Standard

Omeprazole N-Oxide (S-Isomer)

CAS: 1427498-68-7
Formula: C₁₇H₁₉N₃O₄S
MW: 361.4 g/mol

In stock

Reference Standard

Omeprazole oxa impurity

CAS: 2451927-88-9
Formula: C₁₇H₁₉N₃O₃
MW: 313.35 g/mol

VQ-032267

Reference Standard

Omeprazole Pyridone Acid

CAS: 1227380-90-6
Formula: C₁₆H₁₅N₃O₄
MW: 313.31 g/mol

VQ-025617

Reference Standard

Omeprazole Sulfide

CAS: 73590-85-9
Formula: C₁₇H₁₉N₃O₂S
MW: 329.4 g/mol

In stock

Reference Standard

Omeprazole Sulfide N-Oxide

CAS: 142885-92-5
Formula: C₁₇H₁₉N₃O₃S
MW: 345.4 g/mol

VQ-043680

Reference Standard

Omeprazole Sulfide N1-Methyl 5-Methoxy Analog

CAS: 2243644-60-0
Formula: C₁₈H₂₁N₃O₂S
MW: 343.4 g/mol

VQ-038769

Reference Standard

Omeprazole WS

CAS: 73590-58-6
Formula: C₁₇H₁₉N₃O₃S
MW: 345.4 g/mol

In stock

Reference Standard

Omeprazole-13C,d3

CAS: 1261395-28-1
Formula: C₁₇H₁₉N₃O₃S
MW: 349.4 g/mol

VQ-038770

Reference Standard

Omeprazole-d3

CAS: 922731-01-9
Formula: C₁₇H₁₉N₃O₃S
MW: 348.4 g/mol

VQ-038772

Reference Standard

Omeprazole-d3 (benzimidazole-4,6,7-d3)

CAS: 934293-92-2
Formula: C₁₇H₁₉N₃O₃S
MW: 348.4 g/mol

VQ-038771

Reference Standard

Omethoate

CAS: 1113-02-6
Formula: C₅H₁₂NO₄PS
MW: 213.19 g/mol

VQ-032825

Reference Standard

OMJ2 dehydro Impurity

CAS: 1227626-51-8
Formula: C₄₈H₄₂N₆O₅
MW: 782.9 g/mol

VQ-032241

Reference Standard

Ondansetron

CAS: 99614-02-5
Formula: C₁₈H₁₉N₃O
MW: 293.4 g/mol

In stock

Reference Standard

Ondansetron EP Impurity A

CAS: 153139-56-1
Formula: C₁₆H₂₀N₂O
MW: 256.34 g/mol

VQ-032268

Reference Standard

Ondansetron EP Impurity B

CAS: 1076198-52-1
Formula: C₃₇H₃₈N₆O₂
MW: 598.7 g/mol

VQ-032269

Reference Standard

Ondansetron EP Impurity C

CAS: 27387-31-1
Formula: C₁₃H₁₃NO
MW: 199.25 g/mol

VQ-027018

Reference Standard

Ondansetron EP Impurity D

CAS: 99614-64-9
Formula: C₁₄H₁₃NO
MW: 211.26 g/mol

VQ-027019

Reference Standard

Ondansetron EP Impurity G

CAS: 99614-03-6
Formula: C₁₇H₁₇N₃O
MW: 279.34 g/mol

VQ-027020

Reference Standard

Ondansetron EP Impurity H

CAS: 99614-14-9
Formula: C₁₇H₁₇N₃O
MW: 279.34 g/mol

VQ-027021

IP/BP/USP

Ondansetron HCl

CAS: 103639-04-9
Formula: C₁₈H₂₄ClN₃O₃
MW: 365.9 g/mol

VQ-004203

Reference Standard

Ondansetron Hydrochloride

CAS: 99614-01-4
Formula: C₁₈H₂₀ClN₃O
MW: 329.8 g/mol

VQ-038773

Reference Standard

Ondansetron Hydrochloride Dihydrate EP Impurity H (Maleate Salt)

CAS: 99614-15-0
Formula: C₁₇H₁₇N₃O : C₄H₄O₄
MW: 395.42 g/mol

VQ-032270

Reference Standard

Ondansetron USP Related Compound A

CAS: 119812-29-2
Formula: C₁₆H₂₁ClN₂O
MW: 292.8 g/mol

VQ-027017

Reference Standard

Ondansetron-d3

CAS: 1132757-82-4
Formula: C₁₈H₁₉N₃O
MW: 296.4 g/mol

VQ-038776

Reference Standard

Ondansetron-D5

CAS: 1219798-86-3
Formula: C₁₈H₁₉N₃O
MW: 298.4 g/mol

VQ-038775

Reference Standard

Oospoglycol

CAS: 33547-50-1
Formula: C₁₁H₁₀O₅
MW: 222.19 g/mol

VQ-040912

Opal blue

CAS: 2152-64-9
Formula: C₃₇H₃₀ClN₃
MW: 552.1 g/mol

VQ-009531

Reference Standard

OPD 2A (E-Z Mixture)

CAS: 763114-25-6
Formula: C₁₆H₈FNO₂
MW: 265.24 g/mol

In stock

Reference Standard

OPD-3A

CAS: 763114-26-7
Formula: C₁₆H₁₁FN₂O₃
MW: 298.27 g/mol

In stock

Reference Standard

OPD-3A System Suitability Standard

CAS: 420846-72-6
Formula: C₁₆H₁₂N₂O₃
MW: 280.28 g/mol

In stock

Reference Standard

Open Ring Aztreonam

CAS: 87500-74-1
Formula: C₁₃H₁₉N₅O₉S₂
MW: 453.5 g/mol

VQ-023396

Reference Standard

Open Ring Metabolite Meropenem

CAS: 124190-28-9
Formula: C₁₇H₂₇N₃O₆S
MW: 401.5 g/mol

VQ-044283

Reference Standard

Open-Ring Desulfated Aztreonam

CAS: 102586-36-7
Formula: C₁₃H₁₉N₅O₆S
MW: 373.39 g/mol

VQ-027233

Reference Standard

Opicapone

CAS: 923287-50-7
Formula: C₁₅H₁₀Cl₂N₄O₆
MW: 413.2 g/mol

VQ-027023

Reference Standard

Opicapone 3-O-Glucuronide

CAS: 1428009-74-8
Formula: C₂₁H₁₈Cl₂N₄O₁₂
MW: 589.3 g/mol

VQ-038779

Reference Standard

Opicapone Impurity 11

CAS: 874518-62-4
Formula: C₁₀H₁₀O₅
MW: 210.18 g/mol

VQ-049326

Reference Standard

Opicapone sulfate metabolite

CAS: 1428009-72-6
Formula: C₁₅H₁₀Cl₂N₄O₉S
MW: 493.2 g/mol

VQ-045110

Reference Standard

Opipramol

CAS: 315-72-0
Formula: C₂₃H₂₉N₃O
MW: 363.5 g/mol

VQ-045173

Reference Standard

Opipramol Dihydrochloride

CAS: 909-39-7
Formula: C₂₃H₃₁Cl₂N₃O
MW: 436.4 g/mol

VQ-038780

Reference Standard

Opipramol Dihydrochloride Allyl Impurity

CAS: 74074-19-4
Formula: C₁₇H₁₅N
MW: 233.3 g/mol

VQ-049328

Reference Standard

Opipramol Dihydrochloride Deschloro Impurity

CAS: 4346-38-7
Formula: C₂₁H₂₅N₃
MW: 319.4 g/mol

VQ-049329

Reference Standard

Opipramol Dihydrochloride Dimer Impurity

CAS: 62035-55-6
Formula: C₃₁H₂₆N₂
MW: 426.5 g/mol

VQ-049327

Opoponax oil, natural

CAS: 8021-36-1

VQ-019300

Optical Windows AR coated (159.0mm x 19.5mm)

Cat. No.: VQ-018224

VQ-018224

Oracet blue 2R

CAS: 4395-65-7
Formula: C₂₀H₁₄N₂O₂
MW: 314.3 g/mol

VQ-000669

Oracet blue B

CAS: 12769-16-3
Formula: C₂₁H₁₆N₂O₂
MW: 328.4 g/mol

VQ-000670

Microscopy

Orange G, for microscopy

CAS: 1936-15-8
Formula: C₁₆H₁₀N₂Na₂O₇S₂
MW: 452.4 g/mol

VQ-000671

Orange oil, cold-pressed, Brazil origin

CAS: 8008-57-9

VQ-019436

Orange oil, natural, cold-compressed

CAS: 8008-57-9

VQ-019437

Orange oil, terpenes natural

CAS: 68647-72-3

VQ-019301

Reference Standard

Orbifloxacin

CAS: 113617-63-3
Formula: C₁₉H₂₀F₃N₃O₃
MW: 395.4 g/mol

VQ-023342

Reference Standard

Orbifloxacin EP Impurity C

CAS: 126457-99-6
Formula: C₁₉H₂₁F₂N₃O₃
MW: 377.4 g/mol

VQ-027026

Reference Standard

Orbifloxacin EP Impurity D

CAS: 126458-22-8
Formula: C₁₉H₂₁F₂N₃O₄
MW: 393.4 g/mol

VQ-032272

Reference Standard

Orbifloxacin EP Impurity E

CAS: 2817522-38-4
Formula: C₁₉H₂₀F₃N₃O₃
MW: 395.4 g/mol

VQ-032273

Reference Standard

Orbifloxacin EP Impurity F

CAS: 106890-70-4
Formula: C₁₃H₇F₄NO₃
MW: 301.19 g/mol

VQ-027027

Reference Standard

Orbifloxacin EP Impurity G

CAS: 166323-26-8
Formula: C₁₈H₂₀F₃N₃O
MW: 351.4 g/mol

VQ-032274

Microscopy

Orcein, for microscopy

CAS: 1400-62-0
Formula: C₂₈H₂₄N₂O₇
MW: 500.5 g/mol

VQ-000672

Puriss

Orcinol, anhydrous, 99%+

CAS: 504-15-4
Formula: C₇H₈O₂
MW: 124.14 g/mol

VQ-010204

Orcinol, monohydrate, 99%+

CAS: 6153-39-5
Formula: C₇H₁₀O₃
MW: 142.15 g/mol

VQ-000673

Reference Standard

Orciprenaline

CAS: 586-06-1
Formula: C₁₁H₁₇NO₃
MW: 211.26 g/mol

VQ-044413

Reference Standard

Orciprenaline EP Impurity B

CAS: 94200-14-3
Formula: C₁₁H₁₅NO₃
MW: 209.24 g/mol

VQ-027029

Reference Standard

Orciprenaline Sulfate

CAS: 5874-97-5
Formula: C₂₂H₃₆N₂O₁₀S
MW: 520.6 g/mol

VQ-032275

Reference Standard

Orciprenaline Sulfate EP Impurity A

CAS: 70988-89-5
Formula: C₁₂H₁₇NO₃
MW: 223.27 g/mol

VQ-027028

Ordered mesoporous carbon material CMK-3

Cat. No.: VQ-017594

VQ-017594

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Chemicals starting with “O”