L-Methionine (CAS 63-68-3) — formula C5H11NO2S, molecular weight 149.05 g/mol; category food additives.
L-Methionine (CAS 63-68-3) is a food additives. Its molecular formula C5H11NO2S comprises 5 C, 11 H, 1 N, 2 O, 1 S atoms. Its molecular weight is about 149.05 g/mol. Reported physicochemical data: melting point around 283, boiling point around 181 °C (decomposes), LogP about -1.87. Food additives improve flavor, texture, color and shelf life of food, and must comply with relevant food-safety regulations and usage limits. Common in beverages, baking, dairy, meat and seasoning as acidity regulators, preservatives, colorants, thickeners, antioxidants or nutritional fortifiers. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 63-68-3 |
|---|---|
| Molecular Formula | C5H11NO2S |
| Molecular Weight | 149.05 g/mol |
| Melting Point | 283 |
| Boiling Point | 181 °C (decomposes) |
| LogP | -1.87 |
| Packaging | 25/50kg woven bags, 20/25/50kg fibre drums, 200kg plastic drums, 1000kg IBC (subject to order confirmation) |
| Applications | baking, dairy, meat and seasoning as acidity regulators, preservatives, colorants, thickeners |
| Category | Nutrition Enhancers |
Documented applications: baking, dairy, meat and seasoning as acidity regulators, preservatives, colorants, thickeners.
L-Methionine is a food-grade compound with CAS registry number 63-68-3 and molecular formula C5H11NO2S (molecular weight 149.05 g/mol), belonging to the food additives segment of chemical raw materials.
CAS number: 63-68-3
Its molecular formula C5H11NO2S comprises 5 C, 11 H, 1 N, 2 O, 1 S atoms.
Also known as: L-Methionine · L-蛋氨酸
Category: food additives
The CAS registry number of L-Methionine is 63-68-3.
Molecular formula C5H11NO2S, molecular weight 149.05 g/mol.
It is also registered under: L-Methionine, L-蛋氨酸.
Recorded applications: baking, dairy, meat and seasoning as acidity regulators, preservatives, colorants, thickeners.
Category: Nutrition Enhancers.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for L-Methionine (CAS 63-68-3), compiled from public chemistry databases.
| CAS Registry Number | 63-68-3 |
|---|---|
| PubChem CID | 6137 |
| Molecular formula | C5H11NO2S |
| Molecular weight | 149.05 g/mol |
| IUPAC name | (2S)-2-amino-4-methylsulfanylbutanoic acid |
| InChIKey | FFEARJCKVFRZRR-BYPYZUCNSA-N |
| UNII (FDA) | AE28F7PNPL |
| ChEBI ID | CHEBI:16643 |
| ATC code (WHO) | V03AB26 |
| Molecular Weight | 149.21 |
|---|---|
| XLogP3 | -1.9 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 4 |
| Exact Mass | 149.05104977 |
| Monoisotopic Mass | 149.05104977 |
| Topological Polar Surface Area | 88.6 |
| Heavy Atom Count | 9 |
| Boiling Point | 181 °C (decomposes) |
|---|---|
| Melting Point | 283 |
| Melting Point | 284 °C |
| Solubility | 56600 |
| Solubility | In water, 56.6 g/L at 25 °C |
| Solubility | 56.6 mg/mL |
| Vapor Pressure | 0.00000052 [mmHg] |
| LogP | -1.87 |
| LogP | log Kow = -1.87 |
| Ionization Efficiency | 2.7 |
L-methionine; 63-68-3; methionine; h-Met-oh; (S)-2-Amino-4-(methylthio)butanoic acid; Cymethion; L-(-)-Methionine; S-Methionine; L-Methioninum; Neo-methidin; Methilanin; (S)-methionine; (L)-Methionine; metionina; Acimethin; L-Methionin
| Regulatory & Food Contact | EU Flavoring substances FDA Substance added to food: FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT Flavoring Agents CIR / INCI: Cosmetic ingredients (Methionine) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Skin conditioning; Antistatic; Hair conditioning |
|---|---|
| GHS notification summary | 97.6% (206 / 211) |
| GHS notification summary | 97.6% (206 / 211) |
|---|
This chemical does not meet GHS hazard criteria for 97.6% (206 of 211) of all reports.
Reported as not meeting GHS hazard criteria by 206 of 211 companies (only 2.4% companies provided GHS information). For more detailed information, please visit ECHA C&L website.
L-Methionine is identified by CAS 63-68-3, molecular formula C5H11NO2S and molecular weight 149.05 g/mol. UNII AE28F7PNPL; ChEBI 16643; InChIKey FFEARJCKVFRZRR-BYPYZUCNSA-N. Boiling Point: 181 °C (decomposes); Melting Point: 283; Melting Point: 284 °C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: L-蛋氨酸