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

Choline Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"Acetylcholine-1,1,2,2-d4 Bromide" Stable Isotopes CS-T-64432 93449-31-1 Enquire
"DL-A-PHOSPHATIDYLCHOLINE, DIHEXANOYL D40" Stable Isotopes CS-R-00068 53892-41-4(Unlabeled) Enquire
1,2-Dimyristoyl-sn-glycero-3-phosphocholine D9 Stable Isotopes CS-T-93588 18194-24-6 (Unlabeled) Enquire
1,2-Dioleoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-98146 Not Available Enquire
1,2-Distearoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-98147 Not Available Enquire
1,2-Distearoyl-sn-Glycero-3-Phosphorylcholine-d70 Stable Isotopes CS-O-60044 56952-01-3 Enquire
1-Arachidoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-97788 Not Available Enquire
1-Docosahexaenoin-2-oleoyl 3-Phosphocholine-d9 Stable Isotopes CS-T-98142 Not Available Enquire
1-Docosahexaenoyl-2-stearoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-98140 Not Available Enquire
1-Docosahexaenoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-98143 Not Available Enquire
1-Eicosapentaenoyl-sn-glycerol-3-phosphocholine-d9 Stable Isotopes CS-T-98135 Not Available Enquire
1-Myristoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-97272 Not Available Enquire
1-Palmitoyl-2-[3-(diphenylhexatriene)propanoyl]-sn-phosphati... Stable Isotopes CS-T-97935 Not Available Enquire
1-Palmitoyl-2-oleoyl-sn-glycerol-3-phosphocholine-13C16 (Con... Stable Isotopes CS-T-95761 26853-31-6(Unlabelled) Enquire
1-Palmitoyl-2-oleoyl-sn-glycerol-3-phosphocholine-13C18 Stable Isotopes CS-T-94347 70778-75-5(unlabelled) Enquire
1-Palmitoyl-2-pyrenedecanoylphosphatidylcholine-d9 Stable Isotopes CS-T-97938 70700-33-3(Unlabelled) Enquire
1-Palmitoyl-sn-glycero-3-phosphocholine-d9 Stable Isotopes CS-T-84023 182257-09-6 Enquire
2-Arachidonoyl-d11-sn-glycero-3-phosphocholine Stable Isotopes CS-T-98295 Not Available Enquire
2-Docosahexaenoin-1-oleoyl 3-Phosphocholine-d9 Stable Isotopes CS-T-98141 Not Available Enquire
2-Docosahexaenoyl-d5-sn-glycero-3-phosphocholine Stable Isotopes CS-T-98144 Not Available Enquire
2-Eicosapentaenoyl-sn-glycerol-3-phosphocholine-d5 Stable Isotopes CS-T-98134 Not Available Enquire
2-Oleoyl-sn-glycero-3-phosphocholine-d17 Stable Isotopes CS-T-97947 22248-65-3(Unlabelled) Enquire
2-Palmitoyl-sn-glycero-3-phosphocholine-d31 Stable Isotopes CS-T-97930 Not Available Enquire
2-Stearoyl-d35-sn-glycero-3-phosphocholine Stable Isotopes CS-T-97895 Not Available Enquire
Acetylcholine D4 Chloride salt Stable Isotopes CS-O-15405 344298-94-8 Enquire
Acetylcholine D9 Bromide Stable Isotopes CS-T-47175 93449-32-2 Enquire
Acetylcholine-d16 Bromide Stable Isotopes CS-T-64465 347841-43-4 Enquire
Acetylcholine-d9 Chloride Stable Isotopes CS-T-47176 344298-95-9 In Stock
BETA-METHYLCHOLINE D3 Stable Isotopes CS-O-47307 7562-87-0(Unlabelled) Enquire
beta-Methylcholine-D9 Stable Isotopes CS-O-47233 1400302-79-5 Enquire
Chlorocholine Chloride D9 Stable Isotopes CS-T-50586 1219257-11-0 Enquire
Choline Alfoscerate-d9 Stable Isotopes CS-EO-02453 2260669-07-4 Enquire
Choline bromide D9 Stable Isotopes CS-BX-00338 285979-71-7 Enquire
Choline Chloride 13C2 Stable Isotopes CS-BE-00055 67-48-1(Unlabeled) Enquire
Choline Fenofibrate-d6 Stable Isotopes CS-T-101670 Not Available Enquire
CHOLINE O-SULFATE D13 Stable Isotopes CS-R-00207 4858-96-2(Unlabeled) Enquire
Choline-[13C2] Chloride (Solution) Stable Isotopes CS-I-00638 202190-49-6 Enquire
Choline-[13C3] Chloride Stable Isotopes CS-I-00501 1129433-69-7 Enquire
Choline-1,1,2,2-D4 bromide Stable Isotopes CS-BX-00339 285979-69-3 Enquire
Choline-d13 Bromide (N,N,N-trimethyl-d9; 1,1,2,2-d4) Stable Isotopes CS-C-00809 203645-64-1 Enquire
Choline-d13 Chloride (N,N,N-trimethyl-d9; 1,1,2,2-d4) Stable Isotopes CS-T-95067 352438-97-2 Enquire
Choline-d13 tetraphenylborate Stable Isotopes CS-O-40612 94954-00-4 Enquire
Choline-d4 Chloride Stable Isotopes CS-T-71603 285979-70-6 In Stock
Choline-d6 Chloride (N,N-dimethyl-d6) Stable Isotopes CS-C-01383 67-48-1 (Unlabelled) Enquire
Choline-d9 Chloride Stable Isotopes CS-T-51115 61037-86-3 In Stock
Choline-d9 Phosphate Barium Salt Chloride Stable Isotopes CS-T-100616 Not Available Enquire
Choline-d9 tetraphenylborate Stable Isotopes CS-O-40613 94953-97-6 Enquire
Diazoxide choline-d3 Stable Isotopes CS-O-59079 1098065-76-9 (Unlabeled) Enquire
DODECYLPHOSPHOCHOLINE D38 Stable Isotopes CS-R-00071 130890-78-7 Enquire
L-α-Dilauroyl Phosphatidylcholine-d46 Stable Isotopes CS-T-52946 136565-60-1 Enquire
N-Palmitoyl-O-phosphocholine Serine-D9 Stable Isotopes CS-T-95559 2517555-53-0(Unlabelled) Enquire
Palmitoyldocosahexaenoyl Phosphatidylcholine-d9 Stable Isotopes CS-T-97932 Not Available Enquire
Palmitoyleicosapentaenoyl Phosphatidylcholine-d9 Stable Isotopes CS-T-97933 Not Available Enquire
Phosphocholine D9 Chloride Calcium Salt Stable Isotopes CS-T-60534 344299-43-0 Enquire
Propionylcholine-d9 Bromide (N,N,N-trimethyl-d9) Stable Isotopes CS-C-00597 16332-26-6(Unlabelled) Enquire
rac-12-bis(Heptanoylthio)glycerophosphocholine-D9 Stable Isotopes CS-T-97470 210584-04-6(Unlabelled) Enquire
sn-Glycero-3-phosphocholine-d9 Stable Isotopes CS-T-95553 2260669-07-4 Enquire
Succinyl(choline-1,1,1`,1`,2,2,2`,2`-d8) Bromide Stable Isotopes CS-SN-00072 55-94-7(Unlabelled) Enquire
Succinylcholine Chloride-13C6 Stable Isotopes CS-T-99830 Not Available Enquire
Succinylcholine iodide-D18 Stable Isotopes CS-O-44148 1025005-98-4 Enquire
trans-9-Octadecenyl Phosphocholine-D9 Stable Isotopes CS-T-98525 Not Available Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Acetylcholine API Standards CS-ED-00182 51-84-3 Enquire
Choline Bitartrate API Standards CS-T-12856 87-67-2 In Stock
Choline Chloride API Standards CS-O-00533 67-48-1 In Stock
Choline Fenofibrate API Standards CS-ED-00591 856676-23-8 Enquire
Choline Salicylate API Standards CS-T-51114 2016-36-6 In Stock
Methacholine Chloride API Standards CS-T-00945 62-51-1 Enquire
Phosphorylcholine API Standards CS-O-10958 107-73-3 In Stock
Suberyl Dicholine API Standards CS-T-61442 100930-12-9 Enquire
Tricholine citrate API Standards CS-ED-42250 546-63-4 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"1,2-DIEICOSANOYL-SN-GLYCERO-3-PHOSPHOCHOLINE" Impurities CS-DL-00596 61596-53-0 Enquire
"2-Carboxyethyl Methanethiosulfonate, Choline Ester Chloride... Impurities CS-T-10411 1219378-82-1 Enquire
(S)-α-Glycerophosphocholine Impurities CS-T-79189 4217-84-9 Enquire
1-Docosahexaenoyl-2-stearoyl-sn-glycero-3-phosphocholine Impurities CS-T-53930 99264-99-0 Enquire
1-O-Trityl-sn-glycero-3-phosphocholine Impurities CS-T-62574 103675-56-5 Enquire
1-Palmitoyl-2-[3-(diphenylhexatriene)propanoyl]-sn-phosphati... Impurities CS-T-60127 98014-38-1 Enquire
1-Palmitoyl-sn-glycero-3-phosphocholine Impurities CS-T-60131 17364-16-8 In Stock
2-(N-Hexadecanoylamino)-4-nitrophenylphosphocholine Hydroxid... Impurities CS-T-55568 60438-73-5 Enquire
2-Palmitoyl-sn-glycero-3-phosphocholine Impurities CS-T-38612 66757-27-5 Enquire
2-Stearoyl-sn-glycero-3-phosphocholine Impurities CS-T-61416 4421-58-3 Enquire
6-(O-Phosphorylcholine)hydroxyhexanoic Acid Impurities CS-T-60547 73839-24-4 Enquire
6-Hexadecanoylamino-4-methylumbelliferyl Phosphorylcholine Impurities CS-T-55569 904315-61-3 Enquire
Acetyl choline chloride impurity-B Impurities CS-O-54103 Not Available In Stock
Choline Fenofibrate Impurities CS-O-30585 856676-23-8 In Stock
Diazoxide choline Impurities CS-O-56826 1098065-76-9 Enquire
Dipropionyl-L-a-glycerophosphocholine Impurities CS-T-95891 66414-33-3 Enquire
FENOFIBRIC ACID CHOLINE ETHER Impurities CS-O-53427 Not Available Enquire
Gemcitabine Diphosphate Choline Impurities CS-T-78938 1643126-46-8 Enquire
Phosphocholine Chloride Calcium Salt Tetrahydrate Impurities CS-T-39824 72556-74-2 Enquire
Uridine Diphosphate Choline Impurities CS-P-00891 99492-83-8 In Stock
Uridine Diphosphate Choline (UDPC) Sodium Salt Impurities CS-O-48560 1772607-47-2 Enquire
Uridine Diphosphate Choline Ammonium Salt Impurities CS-O-50964 99492-83-8(Freebase) Enquire
Uridine-5-diphosphocholine sodium salt Impurities CS-O-16830 Not Available Enquire
β-Methylcholine Impurities CS-O-47231 7562-87-0 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Phosphatidylcholine from soya bean (Y0001950) EP Standards CS-EG-02520 97281-47-5 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"1,2-Dilauroyl-rac-glycero-3-phosphocholine" Intermediates CS-AX-00226 18656-40-1 Enquire
"1,2-Dimyristoyl-rac-glycero-3-phosphocholine" Intermediates CS-AX-00221 18656-38-7 Enquire
"1,2-Dimyristoyl-sn-glycero-3-phosphocholine" Intermediates CS-AX-00220 18194-24-6 Enquire
"1,2-Distearoyl-rac-glycero-3-phosphocholine" Intermediates CS-AX-00211 816-93-3 Enquire
"1,2-O-Dihexadecyl-sn-glycero-3-phosphocholine" Intermediates CS-AX-00229 36314-47-3 Enquire
1,2-bis(Heptanoylthio)glycerophosphocholine Intermediates CS-T-79069 89019-63-6 Enquire
1,2-Dilinoleoyl-SN-glycero-3-phosphocholine Intermediates CS-ED-27477 998-06-1 Enquire
1,2-Dinonadecanoyl-sn-glycero-3-phosphocholine Intermediates CS-ED-27475 95416-27-6 Enquire
1,2-Dipalmitoyl-rac-glycero-3-phosphocholine Intermediates CS-AX-00216 2797-68-4 Enquire
1,2-Distearoyl-sn-glycero-3-phosphocholine Intermediates CS-AX-00210 816-94-4 Enquire
1,2-Ditetracosanoyl-sn-glycero-3-phosphocholine Intermediates CS-ED-27476 91742-11-9 Enquire
1,2-Docosahexanoyl-sn-glycero-3-phosphocholine Intermediates CS-ED-27478 99296-81-8 Enquire
1-Docosahexaenoyl-sn-glycero-3-phosphocholine Intermediates CS-T-21203 162440-05-3 Enquire
1-Eicosapentaenoyl-sn-glycerol-3-phosphocholine Intermediates CS-T-21525 162440-04-2 Enquire
1-Myristoyl-sn-glycero-3-phosphocholine Intermediates CS-AX-00202 20559-16-4 Enquire
1-Oleoyl-2-docosahexaenoyl phosphatidylcholine Intermediates CS-ED-27358 99296-82-9 Enquire
1-Oleoyl-sn-glycero-3-phosphocholine Intermediates CS-T-59921 19420-56-5 Enquire
1-O-Octadecyl-2-O-methyl-rac-glycero-3-phosphocholine Intermediates CS-AX-00200 70641-51-9 Enquire
1-O-Octadecyl-2-O-methyl-sn-glycero-3-phosphocholine Intermediates CS-CE-00787 77286-66-9 Enquire
1-PALMITOYL-2-OLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE Intermediates CS-AX-00197 26853-31-6 Enquire
1-Palmitoyl-2-oleoyl-sn-glycerol-3-phosphocholine Intermediates CS-T-60082 70778-75-5 Enquire
1-Palmitoyl-2-pyrenedecanoylphosphatidylcholine Intermediates CS-T-60124 95864-17-8 Enquire
2-Carboxyethyl-bromo-choline Ester, Chloride Salt Intermediates CS-T-10398 1219417-69-2 Enquire
2-Docosahexaenoyl-sn-glycero-3-phosphocholine Intermediates CS-T-21202 159407-32-6 Enquire
2-Eicosapentaenoyl-sn-glycerol-3-phosphocholine Intermediates CS-T-21526 112667-21-7 Enquire
2-Oleoyl-sn-glycero-3-phosphocholine Intermediates CS-T-59922 22248-65-3 Enquire
3-O-tert-Butyldimethylsilyl-D-erythro-sphingosylphosphorylch... Intermediates CS-T-50080 168411-99-2 Enquire
4-Aminophenylphosphorylcholine Intermediates CS-T-03290 102185-28-4 Enquire
6-Carboxyhexylphosphocholine p-Nitrophenyl Ester Intermediates CS-T-50338 73785-43-0 Enquire
Acetyl β-methylthiocholine iodide Intermediates CS-CE-00639 1866-17-7 Enquire
Acetyl-β-methylcholine Bromide Intermediates CS-T-47316 333-31-3 Enquire
Acetylcholine bromide Intermediates CS-DV-03445 66-23-9 Enquire
Acetylethylcholine Mustard Hydrochloride Intermediates CS-T-64419 103994-00-9 Enquire
Acetylthiocholine bromide Intermediates CS-ED-39564 25025-59-6 Enquire
Acetylthiocholine chloride Intermediates CS-ED-37891 6050-81-3 Enquire
Acetylthiocholine Iodide Intermediates CS-T-64463 1866-15-5 Enquire
Benzoylthiocholine Iodide Intermediates CS-ED-17102 10561-14-5 Enquire
beta-Glycerylphosphorylcholine Intermediates CS-O-43367 18418-25-2 Enquire
Bromoacetylcholine Bromide Intermediates CS-T-68200 22004-27-9 Enquire
Butyrylthiocholine Iodide Intermediates CS-T-50182 1866-16-6 Enquire
Carbamylcholine Chloride Intermediates CS-T-10229 51-83-2 In Stock
Chlorocholine Chloride Intermediates CS-T-11290 999-81-5 In Stock
D-erythro-Sphingosylphosphorylcholine Intermediates CS-T-42597 1670-26-4 Enquire
Fluorocholine chloride Intermediates CS-M-04736 459424-38-5 Enquire
Lauroylcholine Chloride Intermediates CS-T-57202 25234-60-0 Enquire
L-α-Dilauroyl Phosphatidylcholine Intermediates CS-T-52869 18194-25-7 Enquire
Myristoylcholine Chloride Intermediates CS-T-59047 4277-89-8 Enquire
O-ß-naphthyloxycarbonylcholine Iodide Intermediates CS-AD-00828 63175-14-4 Enquire
Palmitoyl Thio-phosphocholine Intermediates CS-T-84487 113881-60-0 Enquire
Palmitoyldocosahexaenoyl Phosphatidylcholine Intermediates CS-T-60129 59403-54-2 Enquire
Palmitoyleicosapentaenoyl Phosphatidylcholine Intermediates CS-T-38602 99296-77-2 Enquire
rac-12-bis(Heptanoylthio)glycerophosphocholine Intermediates CS-T-55535 210584-04-6 Enquire
rac-3-Hexadecanamido-2-methoxypropan-1-ol Phosphocholine Mon... Intermediates CS-T-55565 163751-35-7 Enquire
rac-3-Octadecanamido-2-ethoxypropan-1-ol Phosphocholine Intermediates CS-T-37736 112989-02-3 Enquire
rac-3-Octadecanamido-2-Methoxypropan-1-ol Phosphocholine Intermediates CS-T-37737 163702-19-0 Enquire
tert-Butyl 6-(O-Phosphorylcholine)hydroxyhexanoate Intermediates CS-T-09840 73839-23-3 Enquire
Tetradecyl-phosphocholine Intermediates CS-T-86921 77733-28-9 Enquire
trans-9-Octadecenyl Phosphocholine Intermediates CS-T-59819 137052-40-5 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,2-Dioleoyl-sn-Glycero-3-Phosphocholine Fine Chemicals CS-ZH-03179 4235-95-4 Enquire
1,2-Dipalmitoylphosphatidylcholine Fine Chemicals CS-ZG-14098 2644-64-6 Enquire
4-Methylumbelliferyl Phosphocholine Fine Chemicals CS-T-58782 97055-84-0 Enquire
4-Nitrophenylphosphorylcholine Fine Chemicals CS-T-59572 21064-69-7 Enquire
Choline Fine Chemicals CS-ZG-97566 62-49-7 Enquire
Choline Hydroxide Fine Chemicals CS-O-34472 123-41-1 In Stock
Cholinephosphoric acid Fine Chemicals CS-ED-02067 645-84-1 Enquire
Lysophosphatidylcholine Fine Chemicals CS-O-35049 9008-30-4 In Stock
Octadecylphosphocholine Fine Chemicals CS-ED-01692 65956-63-0 Enquire
p-Diazonium Phenylphosphorylcholine Fine Chemicals CS-T-52439 35697-91-7 Enquire
Phosphatidylcholine (Soy) Fine Chemicals CS-T-93824 97281-47-5 In Stock
S-Butyrylthiocholine chloride Fine Chemicals CS-T-94221 22026-63-7 Enquire
Succinyl Monocholine Chloride Fine Chemicals CS-P-07544 5297-17-6 Enquire
Succinylcholine Chloride Fine Chemicals CS-O-02375 71-27-2 In Stock
Thiocholine iodide Fine Chemicals CS-O-39510 7161-73-1 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ethoxy Choline Chloride Building Blocks CS-T-95842 6343-89-1 Enquire
sn-Glycero-3-phosphocholine Building Blocks CS-T-55400 28319-77-9 In Stock