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

Guanine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Deoxyguanosine-15N5 Stable Isotopes CS-P-02796 686353-29-7 Enquire
6-Methylthioguanine-[13C,d3] Stable Isotopes CS-I-00527 Not Available Enquire
7-(1-Methyl-2-hydroxyethyl)guanine-d7 Stable Isotopes CS-T-58266 1346603-33-5 (Unlabeled) Enquire
8-Aminoguanine-13C2,15N Stable Isotopes CS-T-96678 Not Available Enquire
9-Carboxymethoxymethylguanine-13C2,15N Stable Isotopes CS-T-96381 Not Available Enquire
9-N-Trifluoroacetyl-2-trifluoroacetamide-6-O-methyl-d3-guani... Stable Isotopes CS-T-102010 1346603-59-5 Enquire
AFB-Guanine-13C,15N2 Stable Isotopes CS-T-98302 Not Available Enquire
N2,9-Diacetylguanine-13C2,15N Stable Isotopes CS-T-100495 Not Available Enquire
N2-Acetyl-O6-diphenylcarbamoylguanine-13C2,15N Stable Isotopes CS-T-100935 Not Available Enquire
N7-(2’,3’,4’-Trihydroxybutyl)guanine-d6 Stable Isotopes CS-T-102006 Not Available Enquire
6-Ethyl Guanine D5 Stable Isotopes CS-T-54480 183558-84-1 Enquire
6-Methylthioguanine-d3 Stable Isotopes CS-T-80056 1346601-96-4 Enquire
6-O-Methyl-d3-guanine Stable Isotopes CS-T-58247 50704-43-3 Enquire
6-Thioguanine 13C3 15N Stable Isotopes CS-CX-00600 154-42-7(Unlabeled) Enquire
7-(1-Methyl-2-hydroxyethyl)guanine-d7 (Major) Stable Isotopes CS-T-82025 1346604-24-7 Enquire
7-[2-Hydroxy(propyl-d6)]guanine Stable Isotopes CS-T-56410 1346599-30-1 Enquire
7-Methylguanine-15N5 Stable Isotopes CS-T-82625 1352033-99-8 Enquire
8-Nitroguanine-4,8-13C2-7-15N, technical grade-50% Purity Stable Isotopes CS-T-83314 1215708-85-2 Enquire
9-[[2-Benzyloxy-1-(benzyloxymethyl)-ethoxy]-methyl]-6-chloro... Stable Isotopes CS-T-48964 1184968-31-7 Enquire
9-[[2-Benzyloxy-1-(benzyloxymethyl)-ethoxy]methyl]guanine-d5 Stable Isotopes CS-T-48968 1185100-63-3 Enquire
9N-Trityl Guanine-13C2,15N Stable Isotopes CS-T-87817 1329799-77-0 Enquire
Guanine 13C3,15N2 Stable Isotopes CS-EK-01639 73-40-5 unlabeled Enquire
Guanine-13C5,15N5 Stable Isotopes CS-T-78869 1207522-89-1 Enquire
Guanine-15N5 Stable Isotopes CS-T-79707 168566-53-8 Enquire
Guanine-4,5-13C2,7-15N Stable Isotopes CS-T-78407 1207525-05-0 Enquire
Guanine-4,8-13C2,7-15N Stable Isotopes CS-T-78542 1246814-70-9 Enquire
N7-(2-Hydroxyethyl)guanine-d4 Stable Isotopes CS-T-78432 1246818-81-4 Enquire
N7-[(2-Hydroxyethoxy)methyl)guanine-d4 Stable Isotopes CS-T-79039 1794787-59-9 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Guanine API CS-O-08365 73-40-5 In Stock
Thioguanine API CS-T-47883 154-42-7 In Stock
Guanine hydrochloride API CS-DA-00557 635-39-2 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
8-Flouro Guanine Metabolite CS-O-10018 28128-36-1 In Stock
9-(β-D-Ribofuranosyl)isoguanine Metabolite CS-N-00274 1818-71-9 Enquire
Nicotinamide guanine dinucleotide sodium salt Metabolite CS-N-00243 5624-35-1 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3,4-anhydro-arabinofuranosyl-isoguanine Impurity CS-O-16458 1093278-60-4 In Stock
6-Methylthioguanine Impurity CS-O-03547 1198-47-6 In Stock
6-O-Methylguanine Impurity CS-T-33924 20535-83-5 In Stock
9-Carboxymethoxymethylguanine Impurity CS-T-70064 80685-22-9 Enquire
9-Methoxymethyl Guanine Impurity CS-T-32526 1202645-50-8 In Stock
3-Methylguanine Impurity CS-T-33926 2958-98-7 Enquire
4-Hydroxy Estradiol 1-N7-Guanine Impurity CS-T-56028 178971-91-0 Enquire
6-Ethyl Guanine Impurity CS-T-76689 51866-19-4 Enquire
7-(1-Methyl-2-hydroxyethyl)guanine Impurity CS-T-34007 1346603-33-5 Enquire
7-Methylguanine Impurity CS-T-33923 578-76-7 Enquire
8-Oxo-Benzylguanine Impurity CS-T-38237 158754-46-2 Enquire
9N-Trityl Guanine Impurity CS-T-45949 374678-33-8 Enquire
N1-(Pivaloyloxy)methyl-N2-(dimethylamino)methylene 9-Deazagu... Impurity CS-T-40215 151587-58-5 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-Methylguanine Intermediate CS-O-57737 5502-78-3 Enquire
N7-(2-Hydroxyethyl)guanine Intermediate CS-T-56033 53498-52-5 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N2-Acetylguanine Fine Chemicals CS-T-47267 19962-37-9 In Stock
7-Deazaguanine Fine Chemicals CS-T-73564 7355-55-7 Enquire
8-Aminoguanine Fine Chemicals CS-T-02687 28128-41-8 Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
6-O-Methylguanine (2-Amino-6-Methoxypurine) Secondary Standards CS-SS-24671-1GM 20535-83-5 Enquire
Guanine Secondary Standards CS-SS-24262-500MG 73-40-5 Enquire
Thioguanine Secondary Standards CS-SS-25941-500MG 154-42-7 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Guanine-d5 Stable Isotope Reagent CS-C-02147 Not Available Enquire


Biochemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Guanine Hydrochloride 98% Biochemicals CS-SR-00322 635-39-2 Enquire