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

Thiourea Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"1,3-Dimethylthiourea-d6" Stable Isotopes CS-T-91614 1329488-72-3 Enquire
1-(2-Aminoethyl-d4)-3-(5-chlorobenzo[c][1,2,5]thiadiazol-4-y... Stable Isotopes CS-T-100877 Not Available Enquire
N,N'-(1,2-Propylene)thiourea-d6 Stable Isotopes CS-T-94034 2122-19-2 (Unlabelled) Enquire
N-Nitro-S-methylisothiourea-13C Stable Isotopes CS-T-102574 2986-25-6(Unlabelled) Enquire
Propylene thiourea D3 Stable Isotopes CS-O-39849 2140327-66-6 Enquire
Tetraethylthiourea-d10 Stable Isotopes CS-T-104070 4274-15-1(unlablled) Enquire
Thiourea-15N2 Stable Isotopes CS-ZG-40361 287476-21-5 Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"N-Cyano-S-(5,5-dichloro-2-methylpenta-2,4-dienyl)-N'-methyl... API Standards CS-H-00386 845879-16-5 Enquire
1-[2-Bromo-5-(trifluoromethyl)phenyl]-2-thiourea API Standards CS-CE-00015 206559-47-9 Enquire
Beta-Naphthylthiourea API Standards CS-T-59123 3394-04-5 Enquire
Tritylthiourea API Standards CS-T-45993 76758-01-5 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Thiourea S-34 Metabolites CS-O-33747 691395-96-7 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"1,3-Dimethylthiourea" Impurities CS-T-52957 534-13-4 Enquire
1-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)methyl)-3-(2-ph... Impurities CS-BF-00538 326815-41-2 Enquire
1-(6-Cyano-5-(trifluoromethyl)pyridin-3-yl)thiourea Impurities CS-O-36234 2422147-84-8 Enquire
1,3-DI-BOC-2-METHYLISOTHIOUREA97% Impurities CS-ZE-32910 322474-21-5 Enquire
1-[4-Cyano-3-(trifluoromethyl)phenyl]thiourea Impurities CS-O-57405 1415552-04-3 Enquire
N-(5-Chloro-2,1,3-benzothiadiazol-4-yl)-thiourea Impurities CS-T-11304 51323-05-8 Enquire
N,N'-Bis[3-(trifluoromethyl-4-cyanophenyl)thiourea Impurities CS-T-93479 1839619-50-9 In Stock
N-Acetylthiourea Impurities CS-T-01202 591-08-2 Enquire
N-Nitro-S-methylisothiourea Impurities CS-DL-00890 2986-25-6 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"(2,5-Dimethyl-phenyl)-thiourea" Intermediates CS-T-90074 16738-19-5 Enquire
"(E)-1-(4-chlorophenyl)-3-(1,1,1-trichloro-4-oxo-6-phenylhex... Intermediates CS-T-50909 1164470-53-4 Enquire
"1-(2-(3,4-dimethoxyphenyl)ethyl))-3-(3-pyridylmethyl)thiour... Intermediates CS-EL-17009 497060-43-2 Enquire
"1-(2,4-Difluorophenyl)-2-thiourea" Intermediates CS-T-90884 175277-76-6 Enquire
"1-(2,5-Dibromophenyl)thiourea" Intermediates CS-T-88468 854890-84-9 Enquire
"1-(3,4-dichlorophenyl)-3-(4-methylbenzoyl)thiourea" Intermediates CS-EL-04135 425664-58-0 Enquire
"1-(3,5-bis(trifluoromethyl)phenyl)-3-((4-methoxyphenyl)meth... Intermediates CS-EL-19672 13795-11-4 Enquire
"1-(3,5-bis(trifluoromethyl)phenyl)-3-(2-pyridylmethyl)thiou... Intermediates CS-EL-09198 1024572-85-7 Enquire
"1-(3,5-bis(trifluoromethyl)phenyl)-3-benzoylthiourea" Intermediates CS-EL-01917 499197-64-7 Enquire
"1,2-Dimethylisothiourea hydriodate" Intermediates CS-DV-00678 41306-45-0 Enquire
"1-Benzoyl-3-(2,4-difluorophenyl)thiourea" Intermediates CS-EL-31175 887266-92-4 Enquire
"2,6-Dichlorophenylthiourea" Intermediates CS-EL-02191 6590-91-6 Enquire
"2,6-Diethylphenylthiourea" Intermediates CS-EL-02701 25343-30-0 Enquire
"3,5-Dimethylphenylthiourea" Intermediates CS-AC-11803 97480-60-9 Enquire
"N-(2,4-Dichlorophenyl)thiourea" Intermediates CS-M-34690 6326-14-3 Enquire
"N,N'-Bis-tert-butoxycarbonylthiourea" Intermediates CS-AC-03772 145013-05-4 Enquire
"N,N-Dimethylthiourea" Intermediates CS-M-45756 6972-05-0 Enquire
"N-[3,5-Bis(trifluoromethyl)phenyl]-N-[(8a,9S)-6-methoxy-9-c... Intermediates CS-DA-00143 852913-16-7 Enquire
(2,3-Dimethylphenyl)thiourea Intermediates CS-AC-02008 55752-58-4 Enquire
(2-Fluoro-5-methylphenyl)thiourea Intermediates CS-ED-19334 1038356-01-2 Enquire
(2-Fluorophenyl)thiourea Intermediates CS-T-74906 656-32-6 Enquire
(2-Hydroxy-5-methylphenyl)thiourea Intermediates CS-AC-04402 500284-61-7 Enquire
(2-Hydroxyphenyl)thiourea Intermediates CS-AC-11729 1520-26-9 Enquire
(3-Ethylphenyl)thiourea Intermediates CS-ED-19664 901375-61-9 Enquire
(4-Acetylphenyl)thiourea Intermediates CS-ED-36533 71680-92-7 Enquire
(4-Bromo-2-hydroxyphenyl)thiourea Intermediates CS-T-71013 1404480-07-4 Enquire
(4-Fluoro-2-methylphenyl)thiourea Intermediates CS-ED-19673 946612-94-8 Enquire
(5-bromopyridin-2-yl)thiourea Intermediates CS-EL-01847 31430-38-3 Enquire
(5-Chloro-2-hydroxy-4-methylphenyl)thiourea Intermediates CS-AC-11800 1820705-08-5 Enquire
(S)-1-(4-(4-(1-(cyclopropylsulfonyl)cyclopropyl)-6-(3-methyl... Intermediates CS-ED-11908 1101810-02-9 Enquire
[(4-Sulfamoylphenyl)methyl]thiourea Intermediates CS-ED-20963 98594-62-8 Enquire
[(Dimethylamino)methylene](triphenylmethyl)-thiourea Intermediates CS-T-19653 910297-67-5 Enquire
[(Z)-benzylideneamino]thiourea Intermediates CS-ED-16554 94794-26-0 Enquire
[2-(Thiophen-2-yl)ethyl]thiourea Intermediates CS-ED-21198 923255-84-9 Enquire
[3-(Dimethylamino)-2,2-dimethylpropyl]thiourea Intermediates CS-ED-17596 1038374-89-8 Enquire
[3-(Propan-2-yl)phenyl]thiourea Intermediates CS-ED-32356 930396-11-5 Enquire
[4-(benzyloxy)-2-hydroxyphenyl]thiourea Intermediates CS-AC-11626 1820609-07-1 Enquire
[5-(trifluoromethyl)pyridin-2-yl]thiourea Intermediates CS-EL-04770 329794-00-5 Enquire
1-(2-(2-(2-(2-Azidoethoxy)ethoxy)ethoxy)ethyl)-3-(3',6'-dihy... Intermediates CS-ED-12024 1402745-37-2 Enquire
1-(2-Bromophenyl)-3-methylthiourea Intermediates CS-T-68983 52599-27-6 Enquire
1-(2-Bromophenyl)thiourea Intermediates CS-T-70733 5391-30-0 Enquire
1-(2-chlorophenyl)methyl)-3-(4-nitrophenyl)thiourea Intermediates CS-EL-04501 900701-83-9 Enquire
1-(2-Methoxyethyl)-2-thiourea Intermediates CS-ED-20086 102353-42-4 Enquire
1-(2-Tetrahydrofurfuryl)-2-thiourea Intermediates CS-T-43743 66892-25-9 Enquire
1-(3-(Methylthio)propyl)-3-phenylthiourea Intermediates CS-ED-30719 99983-00-3 Enquire
1-(3,5-Bis(trifluoromethyl)phenyl)-3-((1R)-(6-methoxyquinoli... Intermediates CS-ED-14919 852913-25-8 Enquire
1-(3,5-Bis(trifluoromethyl)phenyl)-3-((1R,2R)-2-(dimethylami... Intermediates CS-ED-13561 620960-26-1 Enquire
1-(3-Bromophenyl)thiourea Intermediates CS-T-69074 21327-14-0 Enquire
1-(3-Chloro-4-fluorophenyl)-2-thiourea Intermediates CS-T-91265 154371-25-2 Enquire
1-(3-Phenylpropyl)-2-thiourea Intermediates CS-ED-20710 93168-20-8 Enquire
1-(4-Bromo-2-fluorophenyl)thiourea Intermediates CS-AC-07389 930396-07-9 Enquire
1-(4-Bromophenyl)thiourea Intermediates CS-T-69490 2646-30-2 Enquire
1-(4-Chloro-2-hydroxy-5-methoxyphenyl)thiourea Intermediates CS-AC-03871 1820683-26-8 Enquire
1-(4-chloro-2-nitrophenyl)-3-(4-methylbenzoyl)thiourea Intermediates CS-EL-07350 875198-00-8 Enquire
1-(4-chlorophenyl)-3-(2-chlorophenyl)methyl)thiourea Intermediates CS-EL-04925 107774-95-8 Enquire
1-(4-chlorophenyl)-3-(4-methylbenzoyl)thiourea Intermediates CS-EL-01040 133476-67-2 Enquire
1-(4-chlorophenyl)-3-[imino(nitroamino)methyl]thiourea Intermediates CS-EL-01760 204188-36-3 Enquire
1-(4-Methylbenzyl)-2-thiourea Intermediates CS-ED-31396 103854-74-6 Enquire
1-(5-Bromopyrazin-2-yl)thiourea Intermediates CS-ED-19127 912771-40-5 Enquire
1-(Cyclopropylmethyl)thiourea Intermediates CS-EL-06073 618913-44-3 Enquire
1,3-Bis[3,5-bis(trifluoromethyl)phenyl]thiourea Intermediates CS-ED-21014 1060-92-0 In Stock
1,3-Diphenyl-2-thiourea Intermediates CS-T-21013 102-08-9 Enquire
1-[(4-chlorophenyl)carbonyl]-3-[5-(trifluoromethyl)pyridin-2... Intermediates CS-EL-08738 1353878-23-5 Enquire
1-[[2-(2,3-Dichlorophenoxy)acetyl]amino]-3-(4-methylphenyl)t... Intermediates CS-ED-31285 1023497-28-0 Enquire
1-[[2-[(2,2-dimethyl-3H-1-benzofuran-7-yl)oxy]acetyl]amino]-... Intermediates CS-ED-25806 1024194-23-7 Enquire
1-[4-(Benzyloxy)phenyl]thiourea Intermediates CS-EL-08716 65069-53-6 Enquire
1-[4-(Trifluoromethyl)phenyl]-2-thiourea Intermediates CS-M-41758 1736-72-7 In Stock
1-Allyl-3-(4-ethylphenyl)thiourea Intermediates CS-ED-07728 220604-75-1 Enquire
1-Allyl-3-(4-morpholinophenyl)thiourea Intermediates CS-ED-08045 19318-84-4 Enquire
1-Allyl-3-(pyridin-4-yl)thiourea Intermediates CS-ED-07534 321689-96-7 Enquire
1-Amino-3-(2,2,2-trifluoroethyl)thiourea Intermediates CS-ED-08538 1092300-87-2 Enquire
1-Benzhydryl-2-thiourea Intermediates CS-EL-07348 92192-94-4 Enquire
1-Benzoyl-3-(2-hydroxy-5-methylphenyl)thiourea Intermediates CS-AC-03742 429642-03-5 Enquire
1-Benzoyl-3-(3-fluorophenyl)thiourea Intermediates CS-EL-31831 82635-62-9 Enquire
1-Benzoyl-3-(4-cyanophenyl)thiourea Intermediates CS-AC-07941 1448-64-2 Enquire
1-Benzoyl-3-(5-chloro-2-hydroxyphenyl)thiourea Intermediates CS-AC-11847 815612-78-3 Enquire
1-Benzoyl-3-(5-methylisoxazole)thiourea Intermediates CS-EL-03569 85156-33-8 Enquire
1-Benzylthiourea Intermediates CS-EL-04844 621-83-0 Enquire
1-Butyl-2-thiourea Intermediates CS-AC-02052 1516-32-1 Enquire
1-Butyl-3-phenyl-2-thiourea Intermediates CS-M-42068 6336-01-2 Enquire
1-Cyclohexyl-1-ethylthiourea Intermediates CS-ED-24981 953749-41-2 Enquire
1-Cyclohexyl-3-[[2-(4-methylphenyl)sulfonylacetyl]amino]thio... Intermediates CS-ED-31271 1023562-12-0 Enquire
1-Ethyl-2-methyl-3-cyanoisothiourea Intermediates CS-ED-07193 5848-25-9 Enquire
2-Chlorophenylthiourea Intermediates CS-DA-00435 5344-82-1 Enquire
2-Pyridylthiourea Intermediates CS-T-85885 14294-11-2 Enquire
3,5-Dichlorophenylthiourea Intermediates CS-ED-26916 107707-33-5 Enquire
3-Acetylphenylthiourea Intermediates CS-EL-05119 86801-04-9 Enquire
3-Amino-1-(1-benzylpiperidin-4-yl)thiourea Intermediates CS-ED-04284 565164-54-7 Enquire
3-Amino-1-(1-cyclopropylethyl)thiourea Intermediates CS-ED-04700 1153251-86-5 Enquire
3-Amino-1-(1-methoxypropan-2-yl)thiourea Intermediates CS-ED-03175 568551-25-7 Enquire
3-Amino-1-(2,3-dimethylcyclohexyl)thiourea Intermediates CS-ED-05596 953807-00-6 Enquire
3-Amino-1-(2,5-diethoxyphenyl)thiourea Intermediates CS-ED-05680 778590-51-5 Enquire
3-Amino-1-(2-fluoro-5-methylphenyl)thiourea Intermediates CS-ED-08767 1037153-19-7 Enquire
3-Amino-1-(2-methylcyclohexyl)thiourea Intermediates CS-ED-07456 748776-62-7 Enquire
3-Amino-1-(2-methylheptyl)thiourea Intermediates CS-ED-07604 748776-63-8 Enquire
3-Amino-1-(3,4-dimethoxyphenyl)thiourea Intermediates CS-ED-35975 721408-62-4 Enquire
3-Amino-1-(3-ethynylphenyl)thiourea Intermediates CS-ED-12131 1071638-49-7 Enquire
3-Amino-1-(3-fluoro-4-methoxyphenyl)thiourea Intermediates CS-ED-10690 1096922-85-8 Enquire
3-Amino-1-(3-methoxypropyl)-3-methylthiourea Intermediates CS-ED-05791 721415-69-6 Enquire
3-Amino-1-(3-methylbutyl)thiourea Intermediates CS-ED-03173 743452-25-7 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-(3-Fluorophenyl)-2-thiourea Fine Chemicals CS-M-02795 458-05-9 Enquire
1-Cyclohexyl-2-thiourea Fine Chemicals CS-MM-40015 5055-72-1 Enquire
1-Heptyl-2-thiourea Fine Chemicals CS-M-41892 3098-03-1 Enquire
5-Fluoro-2-methylphenyl thiourea Fine Chemicals CS-M-00736 16822-86-9 Enquire
Guanylthiourea Fine Chemicals CS-ED-01890 2114-02-5 In Stock
N-(4-Fluorophenyl)thiourea Fine Chemicals CS-M-02801 459-05-2 Enquire
N,N′-Di-Boc-thiourea Fine Chemicals CS-BX-00870 145013-05-4 Enquire
N,N-Diethylthiourea Fine Chemicals CS-DA-00437 105-55-5 In Stock
N-Allylthiourea Fine Chemicals CS-DA-00439 109-57-9 Enquire
N-Cyano-N′-methyl-S-methylisothiourea Fine Chemicals CS-O-56881 5848-24-8 Enquire
N-Cyano-S-methyl-N'-phenylisothiourea Fine Chemicals CS-H-00389 21504-96-1 Enquire
N-Phenylthiourea Fine Chemicals CS-EP-00380 103-85-5 Enquire
Tetraethylthiourea Fine Chemicals CS-ED-01478 4274-15-1 Enquire
Tetramethylthiourea Fine Chemicals CS-DA-00443 2782-91-4 Enquire
Thiourea Fine Chemicals CS-T-44270 62-56-6 In Stock
Thiourea-13C Fine Chemicals CS-EC-00099 113899-66-4 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-tert-Butyl-3-ethylthiourea Building Blocks CS-O-54010 14326-97-7 Enquire
N-Boc-N-methylthiourea Building Blocks CS-DJ-01025 887913-52-2 Enquire


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ethylthiourea Pesticide Standards CS-T-76217 625-53-6 Enquire