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

Lactose Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
[1 13Cglc]Lactose Monohydrate Stable Isotopes CS-T-57161 287100-62-3 Enquire
[1,2,3-13C3]3'-sialyl[3-13Cglc]lactose sodium salt Stable Isotopes CS-OC-00517 128596-80-5(unlabeled) Enquire
[1,2,3-13C3]3'-sialyl[UL-13C12]lactose sodium salt Stable Isotopes CS-OC-00518 128596-80-5(unlabeled) Enquire
[1'',2'',3''-13C3]6'-sialyllactose, sodium salt Stable Isotopes CS-OC-00526 74609-39-5(unlabeled) Enquire
[1-13Cgal]lactose monohydrate Stable Isotopes CS-OC-00100 64044-51-5 (unlabeled) Enquire
[6-13Cgal]lactose monohydrate Stable Isotopes CS-OC-00103 64044-51-5 (unlabeled) Enquire
[UL-13C12]lactose monohydrate Stable Isotopes CS-OC-00106 64044-51-5 (unlabeled) Enquire
[UL-13C6gal]lactose monohydrate Stable Isotopes CS-OC-00105 64044-51-5 (unlabeled) Enquire
[UL-13C6glc]lactose monohydrate Stable Isotopes CS-OC-00104 64044-51-5 (unlabeled) Enquire
1,6-anhydro-β-D-[UL-13C6]galactose Stable Isotopes CS-OC-00133 644-76-8 (unlabeled) Enquire
2-[15N]amino-2-deoxy-D-[1-13C]galactose hydrochloride Stable Isotopes CS-OC-00136 1772-03-8 (unlabeled) Enquire
4'-Galactosyllactose-d8 Stable Isotopes CS-T-96283 Not Available Enquire
5-Aminoimidazole-4-carboxamide Lactose Adduct-13C2,15N Stable Isotopes CS-T-100863 Not Available Enquire
a-D-Galactose-1,2-13C2 1-Phosphate Dipotassium Salt Stable Isotopes CS-T-96566 Not Available Enquire
a-D-Galactose-1-13C 1-Phosphate Dipotassium Salt Stable Isotopes CS-T-96568 Not Available Enquire
a-D-Galactose-13C6 1-Phosphate Dipotassium Salt Stable Isotopes CS-T-96569 Not Available Enquire
a-D-Galactose-2-13C 1-Phosphate Dipotassium Salt Stable Isotopes CS-T-96567 Not Available Enquire
D-[1,2,3-13C3]galactose Stable Isotopes CS-OC-00143 59-23-4 (unlabeled) Enquire
D-[1,3-13C2]galactose Stable Isotopes CS-OC-00146 59-23-4 (unlabeled) Enquire
D-[1-18O]galactose Stable Isotopes CS-OC-00142 59-23-4 (unlabeled) Enquire
D-[2,3-13C2]galactose Stable Isotopes CS-OC-00148 59-23-4 (unlabeled) Enquire
D-[3,4-18O2]galactose Stable Isotopes CS-OC-00149 59-23-4 (unlabeled) Enquire
D-[3,5-D2]galactose Stable Isotopes CS-OC-00135 59-23-4 (unlabeled) Enquire
D-[5-D]galactose Stable Isotopes CS-OC-00347 59-23-4 (unlabeled) Enquire
D-[6,6'-D2]galactose Stable Isotopes CS-OC-00344 35669-34-2 Enquire
D-[UL-12C6]galactose (13C depleted) Stable Isotopes CS-OC-00134 59-23-4 (unlabeled) Enquire
D-[UL-18O6]galactose Stable Isotopes CS-OC-00150 59-23-4 (unlabeled) Enquire
D-Galactose 13C6 Stable Isotopes CS-T-55174 74134-89-7 Enquire
D-Galactose-1 13C Stable Isotopes CS-T-55175 70849-30-8 Enquire
D-Galactose-1,2 13C2 Stable Isotopes CS-T-55181 478518-63-7 Enquire
D-Galactose-1,6 13C2 Stable Isotopes CS-T-55182 478518-64-8 Enquire
D-Galactose-2 13C Stable Isotopes CS-T-55176 314062-47-0 Enquire
D-Galactose-3 13C Stable Isotopes CS-T-55177 478518-56-8 Enquire
D-Galactose-4 13C Stable Isotopes CS-T-55178 478518-58-0 Enquire
D-Galactose-5 13C Stable Isotopes CS-T-55179 478518-60-4 Enquire
D-Galactose-6 13C Stable Isotopes CS-T-55180 478518-62-6 Enquire
epi-Lactose-1-13C Stable Isotopes CS-T-96528 Not Available Enquire
L-[1-13C]galactose Stable Isotopes CS-OC-00137 15572-79-9 (unlabeled) Enquire
L-[3-13C]galactose Stable Isotopes CS-OC-00141 15572-79-9 (unlabeled) Enquire
Lactose-13C6 Stable Isotopes CS-T-96529 ---- Enquire
L-Galactose 13C6 Stable Isotopes CS-T-55190 478518-66-0 Enquire
Uridine Diphosphate-a-D-galactose Disodium Salt-13C6 Stable Isotopes CS-T-96449 Not Available Enquire
uridine diphosphate-α-D-[1,2,3-13C3]galactose (disodium salt... Stable Isotopes CS-OC-00273 137868-52-1 (unlabeled) Enquire
uridine diphosphate-α-D-[1-13C]galactose (disodium salt) Stable Isotopes CS-OC-00538 137868-52-1 (unlabeled) Enquire
uridine diphosphate-α-D-[UL-13C6]galactose (disodium salt) Stable Isotopes CS-OC-00272 137868-52-1 (unlabeled) Enquire
2-Deoxy-2-acetamido-D-galactose-6,6-d2 Stable Isotopes CS-O-34230 Not Available Enquire
Lactose-13C12 monohydrate Stable Isotopes CS-P-08897 Not Available Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3’-Sialyllactose Sodium Salt Impurity CS-T-85298 128596-80-5 Enquire
Amlodipine Glucose + Galactose adduct Impurity CS-O-50281 ---- Enquire
Amlodipine N-Galactose Impurity CS-P-03118 ---- Enquire
Bumetanide Lactose Adduct Impurity Impurity CS-T-93320 Not Available Enquire
Bumetanide lactose adduct impurity acetate salt Impurity CS-O-35979 Not Available In Stock
Cetirizine Lactose Ester (Technical Grade) (α/β-mixture, mix... Impurity CS-T-93655 ---- In Stock
Cetirizine Lactose Ester Hydrochloride Salt Impurity CS-P-03772 ---- In Stock
Dapsone Lactose Adduct Impurity CS-O-54818 ---- Enquire
Dextroamphetamine Lactose Adduct Impurity CS-O-60337 ---- Enquire
Duloxetine Lactose Impurity CS-O-51787 ---- Enquire
Emtricitabine lactose adduct Impurity CS-O-42884 Not Available Enquire
Entecavir Lactose Adduct Impurity 1 Impurity CS-EO-02268 Not Available Enquire
Glucagon di-lactose adduct-2 Impurity CS-O-37733 ---- Enquire
Glucagon Lactose adduct-1 Impurity CS-O-37732 ---- Enquire
Hydralazine-N-lactose Impurity CS-O-46811 ---- Enquire
Lactose Adduct of 2-Amino 5-Chloro Pyridine Impurity CS-O-58653 ---- Enquire
Lactose dihydrate Impurity CS-O-54839 252208-56-3 Enquire
Levocetirizine Lactose ester-1 Impurity CS-EO-00656 ---- Enquire
Levocetirizine Lactose ester-2 Impurity CS-O-57058 ---- Enquire
Levothyroxine Lactose Adduct Impurity CS-P-08082 Not Available In Stock
Levothyroxine Lactose Adduct (N-lactoside) Impurity CS-O-35442 Not Available Enquire
Levothyroxine-4-Lactose Maillard Impurity Impurity CS-O-50307 Not Available Enquire
Linagliptin Lactose Adduct Impurity CS-O-57459 ---- Enquire
Liothyronine Lactose Adduct Impurity CS-P-08466 ---- In Stock
Memantine lactose adduct Impurity CS-T-57472 1159637-28-1 In Stock
Mixture of Lactose Conjugates Impurity 2 & Pregabalin Impuri... Impurity CS-O-36618 466678-45-5 & 466678-46-6 In Stock
Pregabalin Lactose Aduct II Impurity CS-EO-01423 Not Available Enquire
Primaquine Lactose Adduct Impurity CS-O-53744 ---- Enquire
Prucalopride Lactose Adduct (Mixture of Isomers) Impurity CS-P-02016 Not Available In Stock
Respitose ML006 Monohydrate Lactose Impurity CS-O-02255 5989-81-1 In Stock
R-Pregabalin Amide Lactose Adduct Impurity CS-EO-03215 501665-88-9 Enquire
Sitagliptin lactose impurity Impurity CS-O-57373 ---- Enquire
1,2,4,6-Tetra-O-acetyl-3-O-(2,3,4,6-tetra-O-acetyl-α-D-... Impurity CS-T-61712 123809-61-0 Enquire
3-Sialyl-D-galactose (a/ß mixture) Impurity CS-T-85070 38711-45-4 Enquire
5-Aminoimidazole-4-Carboxamide Lactose Adduct Impurity CS-EO-01995 Not Available Enquire
6-Sialyl-D-galactose Potassium Salt (a/ß mixture) Impurity CS-T-85119 82731-28-0 Enquire
Amlodipine Galactose Adduct Impurity CS-EO-01338 Not Available Enquire
Amlodipine Lactose adduct Impurity CS-T-93508 749864-27-5 Enquire
Dacarbazine Lactose Adduct Impurity Impurity CS-EO-00283 Not Available Enquire
Eltrombopag Lactose Adduct Impurity CS-EO-02811 Not Available Enquire
Gabapentine Lactose Adduct Impurity CS-TB-61307 1990449-64-3 Enquire
Glucagon lactose adduct-3 Impurity CS-O-37734 Not Available Enquire
Isosorbide Impurity 4 (Diluted with Lactose) Impurity CS-P-08748 39698-15-2 Enquire
Lactose Conjugates Impurity 2 Impurity CS-EO-00639 466678-45-5 Enquire
Lactose Olamine Adduct impurity Impurity CS-T-93722 Not Available Enquire
Levothyroxine Lactose Adduct (O-lactoside) Impurity CS-O-35443 Not Available Enquire
Liothyronine Lactose maillard impurity Impurity CS-O-37875 Not Available Enquire
Nebivolol lactose adduct Impurity CS-O-16769 Not Available Enquire
Palbociclib Lactose adduct 1 Impurity CS-P-08261 Not Available Enquire
Palbociclib Lactose adduct 2 Impurity CS-P-08262 Not Available Enquire
Pregabalin lactose conjugate mixture Impurity CS-O-31180 72689-48-6 Enquire
Temozolomide-AIC-lactose Impurity CS-O-36029 Not Available Enquire
Tenofovir alafenamide lactose Millard Reaction product-2 Impurity CS-O-42800 na Enquire
Tenofovir alafenamide lactose Millard Reaction product-3 Impurity CS-O-42801 Not Available Enquire
Teriflunomide Lactose Adduct 1 Impurity CS-P-09214 Not Available Enquire
Teriflunomide Lactose Adduct 2 Impurity CS-P-09215 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
SULFATE LACTOSE Intermediate CS-O-47713 Not Available Enquire


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fluoxetine Lactose Adduct Glucuronide CS-O-53318 199188-94-8 In Stock
Lactose Fast Flo Pharma Grade Glucuronide CS-O-36769 63-42-3 Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Epilactose (Secondary Standards traceble to USP) Secondary Standards CS-SS-26580-1GM 50468-56-9 Enquire
Epilactose (Secondary Standards traceble to USP) Secondary Standards CS-SS-26580 50468-56-9 Enquire
Galactose Secondary Standards CS-SS-24232-500MG 59-23-4 Enquire
Lactose (Monohydrate) Secondary Standards CS-SS-24082-1GM 64044-51-5 Enquire
Lactose, Anhydrous Secondary Standards CS-SS-24083-1GM 63-42-3 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
D-Galactose-2-d Stable Isotope Reagent CS-T-55186 64429-86-3 Enquire
D-Galactose-3-d Stable Isotope Reagent CS-T-55187 478518-70-6 Enquire
D-Galactose-4-d Stable Isotope Reagent CS-T-55188 478518-71-7 Enquire
D-Galactose-d Stable Isotope Reagent CS-T-55185 64267-73-8 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2'-Fucosyllactose (~90%) Building Blocks CS-TB-60614 41263-94-9 Enquire
2-[(Azidoacetyl)amino]-2-deoxy-D-galactose Building Blocks CS-O-43551 869186-83-4 Enquire
Lactose Monohydrate Building Blocks CS-TB-79636 10039-26-6 Enquire


Carbohydrates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,2,3,4-tetra-O-acetyl-6-azido-6-deoxy-D-galactose Carbohydrates CS-O-52033 629620-22-0 Enquire
3-Deoxy-3-fluoro-D-galactose Carbohydrates CS-T-15373 52904-86-6 Enquire
3-fucosyl-lactose Carbohydrates CS-OC-00524 41312-47-4 Enquire
Ac7 Lactose-PEG-N3 Carbohydrates CS-O-52046 153253-42-0 Enquire
alpha-Lactose monohydrate Carbohydrates CS-ED-42152 10639-26-6 Enquire
Alpha-Lactose monohydrate Carbohydrates CS-BX-00379 5989-81-1 In Stock
D-Galactose Carbohydrates CS-T-25039 59-23-4 In Stock
Epilactose Carbohydrates CS-O-10090 50468-56-9 In Stock
Lactodifucotetraose Carbohydrates CS-O-51916 20768-11-0 Enquire
Lacto-N-neofucopentaose Carbohydrates CS-O-52019 145876-86-4 Enquire
Lacto-N-sialylpentaose a Carbohydrates CS-O-52020 64003-53-8 Enquire
Lactose monohydrate Carbohydrates CS-O-01716 64044-51-5 In Stock
Lactose Octasulfate Potassium Salt Carbohydrates CS-O-55645 ---- Enquire
Lactose-N-fucopentose 4 Carbohydrates CS-O-52018 60254-64-0 Enquire
Lactose-PEG-N3 Carbohydrates CS-O-52044 246855-74-3 Enquire
L-Galactose Carbohydrates CS-T-55189 15572-79-9 Enquire
N-Acetylneuraminyl-alpha(2-6)-lactose Carbohydrates CS-AH-00021 35890-39-2 In Stock
Trifuco para-lacto N-hexaose I Carbohydrates CS-O-52027 120864-60-0 Enquire
Trifucosyl-para-lacto-N-hexaose Carbohydrates CS-O-52025 Not Available Enquire
α-D-neneneba galactose amine 1-phosphate Hydrate Carbohydrates CS-O-51124 75656-33-6 Enquire
β-D-Galactose Carbohydrates CS-T-55184 7296-64-2 Enquire
α-D-Galactose-1-phosphate Carbohydrates CS-N-00096 2255-14-3 Enquire
β-D-Galactose pentapivalate Carbohydrates CS-N-00101 108342-85-4 Enquire
1,2,3,4,6-Pentakis-O-(trimethylsilyl) a-D-Galactose Carbohydrates CS-T-60253 32166-80-6 Enquire
1,6-Anhydro-β-D-galactose Carbohydrates CS-T-03840 644-76-8 Enquire
1-Amino-1-deoxy-beta-D-galactose Carbohydrates CS-DK-00126 74867-91-7 Enquire
1-Azido-1-deoxy-D-Galactose Carbohydrates CS-AI-00003 Not Available Enquire
1-Azido-1-deoxy-D-Galactose Peracetate Carbohydrates CS-AI-00004 20379-59-3 Enquire
1-Thio-β-D-galactose Sodium Salt Carbohydrates CS-T-62017 42891-22-5 Enquire
2,4-Bis(acetylamino)-2,4,6-trideoxy-D-galactose Carbohydrates CS-T-49014 68567-47-5 Enquire
2-Acetamido-2-deoxy-3-O-(-β-D-galactopyranosyl)-D-galac... Carbohydrates CS-T-46941 3554-90-3 Enquire
2-Acetamido-2-deoxy-3-O-(a-D-galactopyranosyl)-D-galactose Carbohydrates CS-T-46940 60283-31-0 Enquire
2-Azido-2-deoxy-D-Galactose Carbohydrates CS-AI-00009 68733-26-6 Enquire
2-Deoxy-2-fluoro-D-galactose Carbohydrates CS-T-51953 51146-53-3 Enquire
2-Deoxy-D-galactose Carbohydrates CS-T-51971 1949-89-9 Enquire
2-O-α-L-Fucopyranosyl-D-galactose Carbohydrates CS-T-55114 24656-24-4 Enquire
2-O-(a-D-Galactopyranosyl)-D-galactose Carbohydrates CS-T-55165 93601-68-4 Enquire
2-O-(a-D-Glucopyranosyl)-D-galactose Carbohydrates CS-T-55302 7368-73-2 Enquire
2'-O-Methyl Lactose Carbohydrates CS-T-58324 77667-98-2 Enquire
3,4,6-Tri-O-acetyl-2-azido-2-deoxy-D-galactose Carbohydrates CS-T-62194 83025-10-9 Enquire
3,4,6-Tri-O-benzyl-D-galactose Carbohydrates CS-T-86961 114179-79-2 Enquire
3,6-Anhydro-D-galactose Carbohydrates CS-DA-00264 14122-18-0 Enquire
3,6-Anhydro-L-galactose Carbohydrates CS-TA-19367 28251-55-0 Enquire
3′-Galactosyllactose Carbohydrates CS-ED-42080 32694-82-9 Enquire
3′-Sialyllactose Carbohydrates CS-O-54324 35890-38-1 Enquire
3-O-(a-D-Galactopyranosyl)-D-galactose Carbohydrates CS-T-55166 13168-24-6 Enquire
3-O-(a-L-Fucopyranosyl)-D-galactose Carbohydrates CS-T-55115 120375-11-3 Enquire
3-O-ß-D-Galactopyranosyl-D-galactose Carbohydrates CS-T-79085 1642128-76-4 Enquire
3-O-ß-D-Galactopyranosyl-D-galactose Carbohydrates CS-T-78203 5188-48-7 Enquire
4-Deoxy-4-fluoro-D-galactose Carbohydrates CS-T-15374 40010-20-6 Enquire
4-O-(2-Acetamido-2-deoxy-α-D-glucopyranosyl)-D-galactos... Carbohydrates CS-T-46955 76909-76-7 Enquire
4-O-(a-D-Galactopyranosyl)-D-galactose Carbohydrates CS-T-55167 13117-26-5 Enquire
4-O-(a-L-Fucopyranosyl)-D-galactose Carbohydrates CS-T-55116 24667-50-3 Enquire
6’-Sialyllactose Sodium Salt Carbohydrates CS-T-86018 157574-76-0 Enquire
6′-Galactosyllactose Carbohydrates CS-ED-42079 32581-31-0 Enquire
6-Azido-6-deoxy-D-galactose, =98.0% (HPLC) Carbohydrates CS-DF-00048 66927-03-5 Enquire
6-Deoxy-6-fluoro-D-galactose Carbohydrates CS-T-15375 447-25-6 Enquire
6-O-[2-(Acetylamino)-2-deoxy-β-D-glucopyranosyl]-D-galactose Carbohydrates CS-T-64179 20212-77-5 Enquire
alpha-D-Galactose-1-phosphate dipotassium salt hydrate Carbohydrates CS-N-00098 19046-60-7 Enquire
D-Galactose Pentaacetate Carbohydrates CS-T-25064 25878-60-8 Enquire
D-Galactose-3-sulfate Sodium Salt Carbohydrates CS-T-55191 13240-30-7 Enquire
D-Galactose-4-O-sulphate sodium salt Carbohydrates CS-N-00099 125113-68-0 Enquire
D-Lactose Anhydrous Carbohydrates CS-BX-00389 Not Available Enquire
Lactose Carbohydrates CS-E-05307 14641-93-1 Enquire
Lactose 200 MESH Pharma Grade Carbohydrates CS-O-36768 63-42-3 Enquire
Lactose Octaacetate Carbohydrates CS-T-57163 6291-42-5 Enquire
Lactose PEG-NH2 Carbohydrates CS-O-51145 Not Available Enquire
Lactose-3'-sulfate Carbohydrates CS-T-57164 159358-51-7 Enquire
UDP-D-galactose disodium salt Carbohydrates CS-N-00299 2956-16-3 Enquire
Uridine-5’-diphosphate-4-deoxy-4-fluoro-a-D-galactose Carbohydrates CS-T-87997 190852-32-5 Enquire
β-Lactose Carbohydrates CS-O-32603 5965-66-2 In Stock


Chiral

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
D-Lactose Anhydrous Chiral CS-T-57160 63-42-3 In Stock


Enzymes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Galactose oxidase (FgGalOx-M1) Enzymes CS-O-50431 Not Available Enquire
PfGalDH (Galactose dehydrogenase) Enzymes CS-O-50418 Not Available Enquire