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

Menthol Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,2S,5R)-(-)-Menthol-d4 Stable Isotopes CS-T-95140 1450828-98-4 Enquire
(1R,2S,5R)-(-)-Menthol-d4 2,3,4-Tri-O-acetyl-b-D-glucuronide... Stable Isotopes CS-T-102775 Not Available Enquire
(2R,5S)-L-Menthol-5-(4-amino-2-oxo-1(2H)-pyrimidinyl-13C)-1,... Stable Isotopes CS-T-97334 Not Available Enquire
Menthol-d4 (mixture of diastereomers) Stable Isotopes CS-T-82203 1217765-02-0 Enquire
Menthol-d4 2,3,4-Tri-O-acetyl-β-D-glucuronide Methyl Ester Stable Isotopes CS-T-97335 Not Available Enquire
Menthol-d4 b-D-Glucuronide (Mixture of Diasteromers) Stable Isotopes CS-T-97336 Not Available Enquire
rel-Neomenthol-D4 Stable Isotopes CS-T-97269 Not Available Enquire
(+)-Neomenthol-d4 Stable Isotopes CS-T-97270 Not Available Enquire
(1R,2S,5R)-(-)-Menthol b-D-Glucuronide-d4 Stable Isotopes CS-T-95141 Not Available Enquire
(2R,5S)-L-Menthol-5-(4-amino-2-oxo-1(2H)-pyrimidinyl-15N2,13... Stable Isotopes CS-T-82726 1322623-13-1 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(+)-Isomenthol API CS-E-00061 23283-97-8 In Stock
L-Menthol API CS-O-30974 2216-51-5 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Menthyl isovalerate Impurity CS-O-57677 16409-46-4 Enquire
(±)-Neoisomenthol Impurity CS-T-83293 491-02-1 Enquire
(2S,5S)-D-Menthol-5-(acetyloxy)-1,3-oxathiolane-2-carboxylat... Impurity CS-T-57487 147126-68-9 Enquire
1-O-Dihydroxyacetyl-D-menthol Impurity CS-T-19071 1402543-99-0 Enquire
L-Menthol-5-(acetyloxy)-1,3-oxathiolane-2-carboxylate Impurity CS-T-82119 200396-20-9 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(-)-8-Phenylmenthol Intermediate CS-T-84236 65253-04-5 Enquire
(2R,5R)-5-Hydroxy[1,3]oxathiolane-2-carboxylic Acid L-Mentho... Intermediate CS-O-31943 147126-62-3 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1R,2S,5R)-(-)-Menthol ß-D-Glucuronide Glucuronide CS-T-57484 79466-08-3 Enquire
(1S,2R,5S)-(+)-Menthol ß-D-Glucuronide Glucuronide CS-T-57486 114127-73-0 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(+)-Neomenthol Fine Chemicals CS-O-54065 2216-52-6 Enquire
DL-Menthol Fine Chemicals CS-O-13905 89-78-1 In Stock
Menthyl acetate Fine Chemicals CS-ZG-80301 89-48-5 In Stock
Isomenthol Fine Chemicals CS-O-37217 3623-52-7 Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Menthol Crystals Secondary Standards CS-SS-26636 2216-51-5 Enquire
Menthol Crystals Secondary Standards CS-SS-26596 2216-51-5 Enquire
L-Menthol Secondary Standards CS-SS-24160-1GM 2216-51-5 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1RS,2RS,5R)-Menthol-1,2,6,6-d4 Stable Isotope Reagent CS-C-00766 1369536-10-6(Unlabelled) In Stock


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1S,2R)-3,3-Dimethoxy-1,2-cyclobutanedicarboxylic Acid Di-L-... Building Blocks CS-T-18545 138736-91-1 Enquire
(2R,5R)-L-Menthol-5-(acetyloxy)-1,3-oxathiolane-2-carboxylat... Building Blocks CS-T-57488 147027-09-6 Enquire