L-Methionine CAS 63-68-3 (H-Met-OH) Assay 99.0~101.0% Factory High Quality
Shanghai Ruifu Chemical Co., Ltd. is the leading supplier of L-Methionine (H-Met-OH; Abbreviated Met or M) (CAS: 63-68-3) with high quality, production capacity 10000 Tons per year. As one of the largest amino acids suppliers in China, Ruifu Chemical supplys amino acids up to international standards, such as AJI, USP, EP, JP and FCC standards. We can provide COA, worldwide delivery, small and bulk quantities available. If you are interested in L-Methionine, Please contact: alvin@ruifuchem.com
| Chemical Name | L-Methionine |
| Synonyms | H-Met-OH; L-Met; Abbreviated Met or M; Laevo-Methionine; L(-)-Methionin; S-Methionine; (S)-2-Amino-4-(Methylthio)butanoic Acid; (S)-2-Amino-4-(Methylmercapto)butyric Acid; L-2-Amino-4-(Methylthio)butanoic Acid; S-Methyl-L-Momocysteine; L-α-Amino-γ-Methylthiobutyric Acid |
| Stock Status | In Stock, Production Capacity 10000 Tons per Year |
| CAS Number | 63-68-3 |
| Molecular Formula | C5H11NO2S |
| Molecular Weight | 149.21 |
| Melting Point | 284℃(dec.)(lit.) |
| Density | 1.34g/cm |
| Sensitive | Light Sensitive, Moisture Sensitive |
| Water Solubility | Soluble in Water, Almost Transparency |
| Solubility | Insoluble in Ethanol, Acetone, Ether. Dissolves in Dilute Hydrochloric Acid |
| Storage Temp. | Sealed in Dry, Store at Room Temperature |
| COA & MSDS | Available |
| Classification | Amino Acids |
| Brand | Ruifu Chemical |
| Risk Statements | 33-Danger of cumulative effects | F | 10-23 |
| Safety Statements | 24/25-Avoid contact with skin and eyes |
TSCA | Yes |
| WGK Germany | 2 | HS Code | 2930400000 |
| RTECS | PD0457000 |
| Items | Inspection Standards | Results |
| Appearance | White Crystals or Crystalline Powder; Characteristic Odor | Conforms |
| Identification | Infrared Absorption Spectrum | Conforms |
| Specific Rotation [α]20/D | +23.0° to +24.5°(C=2, 6N HCl) |
+23.8° |
| State of Solution (Transmittance) | Clear and Colorless ≥98.0% | 98.5% |
| Chloride (Cl) | ≤0.020% | <0.020% |
| Sulfate (SO4) | ≤0.020% | <0.020% |
| Ammonium (NH4) | ≤0.020% | <0.020% |
| Iron (Fe) | ≤10ppm | <10ppm |
| Heavy Metals (Pb) | ≤10ppm | <10ppm |
| Arsenic (As2O3) | ≤1.0ppm | <1.0ppm |
| Other Amino Acids | Meets the Requirements | Conforms |
| Loss on Drying | ≤0.20% (at 105℃ for 3 hours) | 0.15% |
| Residue on Ignition (Sulfated) | ≤0.10% | 0.07% |
| Assay | 99.0 to 101.0% (Titration on Dried Substance) | 99.7% |
| pH Test | 5.6 to 6.1 (0.5g in 20ml of H2O) | 5.8 |
| Origin | From Non-Animal Source | Conforms |
| Residual Solvents | Meets the Requirements | Conforms |
| Conclusion | Meets the Standard of AJI97; USP; EP; JP | |
| Main Uses | Food Additives; Feed Additives; Pharmaceutical Intermediates, etc. | |
L-Methionine (CAS: 63-68-3) AJI 97 Test Method
Identification: Compare the infrared absorption spectrum of the sample with that of the standard by potassium bromide disc method.
Specific Rotation [α]20/D: Dried Sample, C=2, 6mol/L HCl
State of Solution (Transmittance): 0.5g in 20ml of H2O spectrophotometer, 430mm, 10nm cell thickness.
Chloride (Cl): 0.7g, A-4, ref: 0.40ml of 0.01mol/L HCl
Ammonium (NH4): B-2
Sulfate (SO4): 1.2g, (1), ref: 0.50ml of 0.005mol/L H2SO4
Iron (Fe): 1.5g, (1), ref: 1.5ml of Iron Std. (0.01mg/ml)
Heavy Metals (Pb): 2.0g, (1), dissolve by warming, ref: 2.0ml of Pb Std. (0.01mg/ml)
Arsenic (As2O3): 2.0g, (1), ref: 2.0ml of As2O3 Std.
Other Amino Acids: Test Sample: 50μg, B-6-a, control: L-Met 0.25μg
Loss on Drying: at 105℃ for 3 hours.
Assay: Dried sample, 150mg, (1), 3ml of formic acid, 50ml of glacial acetic acid, 0.1mol/L HCLO4 1ml=14.92mg C5H11NO2S
pH Test: 0.5g in 20ml of H2O
Package: Fluorinated Bottle, 25kg/bag, 25kg/Cardboard Drum, or according to customer's requirement.
Storage Condition: Store in sealed containers at cool, dry and ventilated warehouse away from incompatible substances. Protect from light and moisture.
How to Purchase? Please contact Dr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com
15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals.
Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc.
Advantages? Superior quality, affordable price, professional services and technical support, fast delivery.
Quality Assurance? Strict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc.
Samples? Most products provide free samples for quality evaluation, shipping cost should be paid by customers.
Factory Audit? Factory audit welcome. Please make an appointment in advance.
MOQ? No MOQ. Small order is acceptable.
Delivery Time? If within stock, three days delivery guaranteed.
Transportation? By Express (FedEx, DHL), by Air, by Sea.
Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.
Custom Synthesis? Can provide custom synthesis services to best fit your research needs.
Payment Terms? Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc.
L-Methionine (H-Met-OH; Abbreviated Met or M) (CAS: 63-68-3) is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant. L-Methionine is used for biochemical studies. L-Methionine is used in the fields of chiral drugs, chiral additives, chiral auxiliaries and the like, and is used as a chiral source for chiral synthesis in the pharmaceutical industry. L-Methionine can be used in the synthesis of medicinal vitamins, nutritional supplements and feed additives. L-Methionine is one of the main components of amino acid infusion and compound amino acid. L-methionine has anti-fatty liver function. Taking advantage of this function, the synthetic medicinal vitamins can be used as liver protection preparations.
Function of L-Methionine
1. L-Methionine can be used as nutional supplement. DL-methionine has the same effect with L-methionine, but DL-methionine is cheaper.
2. L-Methionine can be formulated as a flavoring agent.
3. L-Methionine has a protective role of the liver. Methionine has effects of anti cirrhosis, fatty liver, and a variety of acute, chronic, viral, jaundice liver.
4. L-Methionine has a myocardial protective effect.
5. L-Methionine has an antidepressant effect.
6. L-Methionine has a blood pressure lowering effect.
7. L-Methionine has an antivirus poison eradicates effect.
8. L-Methionine is the feed nutrition enhancer.Livestock and poultry lack of methionine, can lead to stunted growth, weight loss, liver and kidney function abate, muscle atrophy, fur, metamorphism and so on.Add 1 kg methionine, feed of 50 kg fish meal nutrition value.Feed in the general content of 0, 05 % to 0.2%. Methionine is a kind of important amino acid varieties, is a kind of indispensable in the animal feed additives, animal feed with methionine added can help animals grew quickly in a short time, make its save about 40% of the feed. In the compound feed, especially poultry feed, methionine is the first limiting amino acid.
Application of L-Methionine
1. Food grade: nutrition enhancer, flavouring agent, improving food nutrition value and flavor
2. Feed grade: improving animal production performance, health and the quality of animal products
3. Medicine grade: liver and myocardial protection, fight depression, fall blood pressure
4. Nutritional Supplements
5. Methionine is biological protein synthesis skeleton amino acids. Methionine is the necessary growth factors in livestock animal. It can also regulate animal's metabolism.
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