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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for 1,4-butane, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our 1,4-butane 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 1,4-butane-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.

1,4-butane Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"1,4-Butanediol mononitrate D8" Stable Isotopes CS-CX-00193 1261398-94-0 Enquire
"2-Oxa-1,4-butanediol diacetate-3,3,4,4-d4" Stable Isotopes CS-T-84150 1189431-46-6 Enquire
1-(3-Pyridyl-13C6)-1,4-butanediol Stable Isotopes CS-T-98759 Not Available Enquire
1,4-Butane-1,1,2,2,3,3,4,4-d8-diamine Stable Isotopes CS-T-52397 709608-92-4 Enquire
1,4-Butane-2,2,3,3-d4-diamine Dihydrochloride Stable Isotopes CS-C-00038 88972-24-1 Enquire
Ademethionine-d3 1,4-Butanedisulfonate (>85%) Stable Isotopes CS-T-103021 101020-79-5(Unlabelled) Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"(R)-(+)-2-(Boc-amino)-1,4-butanediol" Impurities CS-AC-04093 397246-14-9 Enquire
"1,1’-[1,4-Butanediylbis[oxy(3-oxo-3,1-propanediyl)]]bis[4-(... Impurities CS-T-69672 116819-79-5 Enquire
"1,4-Bis(4-bromophenyl)-1,4-butanedione" Impurities CS-T-06754 2461-83-8 Enquire
(S)-2-Methyl-1,4-butanediol Impurities CS-EC-00003 70423-38-0 Enquire
1,4-Butanedioldiglycidylether Impurities CS-CF-00015 2425-79-8 In Stock
8,8'-(1,4-Butanediyl)bis-8-azaspiro[4.5]decane-7,9-dione Impurities CS-T-49993 257877-44-4 In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"(2R,3S)-rel-2,3-Dibromo-1,4-butanediol" Intermediates CS-T-88353 76818-94-5 Enquire
"(S)-(-)-2-(BOC-Amino)-1,4-butanediol" Intermediates CS-CG-00121 128427-10-1 Enquire
"2,3Dibromo-1,4-butanediol" Intermediates CS-DV-01231 1947-58-6 Enquire
"4-Oxo-1,4-butanesultam" Intermediates CS-AC-10934 913836-20-1 Enquire
"N,N'-Dimethyl-1,4-butanediamine" Intermediates CS-AC-02598 16011-97-5 Enquire
1-(3-Pyridyl)-1,4-butanediol Intermediates CS-T-41140 76014-83-0 Enquire
1,4-Butanediol bis(1,2-propane diol) ether Intermediates CS-O-49312 45176-21-4 Enquire
1,4-Butanediol diacrylate Intermediates CS-ED-36541 1070-70-8 Enquire
1,4-Butanediyl Bismethanethiosulfonate Intermediates CS-T-49994 55-99-2 Enquire
1,4-Butanesultam Intermediates CS-AC-11737 37441-50-2 Enquire
2-Butenoic acid, 3-amino-, 1,1'-(1,4-butanediyl) ester Intermediates CS-ED-40244 14205-47-1 Enquire
2-Oxa-1,4-butanediol diacetate Intermediates CS-T-38134 59278-00-1 In Stock
Acetic acid, mercapto-, 1,4-butanediyl ester Intermediates CS-ED-20844 10193-95-0 Enquire
N,N-Dicyanoethyl-1,4-butanediamine Intermediates CS-T-17858 14209-32-6 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,4-Butane Sultone Fine Chemicals CS-T-09157 1633-83-6 In Stock
1,4-Butanediol Fine Chemicals CS-T-09172 110-63-4 In Stock
1,4-Butanediol dimethacrylate Fine Chemicals CS-ED-02024 2082-81-7 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
S-Adenosyl-L-methionine 1,4-butane sulfonate Building Blocks CS-T-47451 101020-79-5 In Stock