L-Methionine
Products Description
Methionine is an amino acid. It is found in meat, fish, and dairy products. Amino acids are the building blocks that our bodies use to make proteins. Methionine plays an important role in the many functions within the body. Methionine can treat liver disorders and viral infections along with many other uses.
| Test item | specifications |
| Assay | 98.5% to 101.5% |
| Identification | Infrared absorption |
| Specific rotation | +22.4° to +24.7° |
| PH | 5.6 to 6.1 |
| Loss on drying | Not more than 0.3% |
| Residue on ignition | Not more than 0.4% |
| Sulfate | Not more than 0.03% |
| Iron | Not more than 0.003% |
| Heavy metals | Not more than 0.0015% |
| Chromatographic purity | Not more than 0.5% of any individual impurity is found, and not more than 2.0% of total impurities is found |
| Organic volatile impurities | Meets the requirements |
| Chloride | Not more than 0.05% |
Basic Info
Characteristics
133.65 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|152.05 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|127 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|133.1 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|132 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|134.08 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|140.5 Ų [M-H]-
Platelets from alcohol. mp 281 °C (decomposes), density 1.340; pKa1 = 2.28, pKa2 = 9.21; pH of 1% aqueous solution 5.6-6.1; Rf value 0.77. Solubility in water (g/L) at 0 °C: 18.18; at 25 °C: 33.81; at 50 °C: 60/.70; at 75 °C: 15.2 °C. Soluble in dilute acids, alkalies. Very slightly soluble in 95% alcohol. Insoluble in ether. /Methionine, DL-form/|UV: 1-65 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York) /Methionine (DL)/|Hydroxyl radical reaction rate constant = 5.13X10-11 cu cm/molec-sec at 25 °C (est)
Handling and Storage
Precautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants. Well closed.
| Amino Acids | |||
| Product name | Cas No. | Product name | Cas No. |
| D-aspartic acid | 1783-96-6 | DL-Valine | 516-06-3 |
| taurine | 107-35-7 | DL-Leucine | 328-39-2 |
| l-lysine base | 56-87-1 | DL-Threonine | 80-68-2 |
| L-Methionine | 63-68-3 | DL-Methionine | 59-51-8 |
| L-Threonine | 72-19-5 | DL-Alanine | 302-72-7 |
| L-Pyroglutamic acid | 98-79-3 | Glycine | 56-40-6 |
| L-Cystine | 56-89-3 | L-Glutamine | 56-85-9 |
| L-Tyrosine | 60-18-4 | L-Phenylalanine | 63-91-2 |
| L-Leucine | 61-90-5 | L-Proline | 147-85-3 |
| L-Isoleucine | 73-32-5 | L-Histidine Hcl | 5934-29-2 |
| L-Valine | 72-18-4 | L-Histidine | 71-00-1 |
| L-Citrulline | 372-75-8 | L-Tryptophan | 73-22-3 |
| L-Arginine | 74-79-3 | N-Acetyl-L-Tyrosine | 537-55-3 |
| L-Arginine monohydrochloride | 1119-34-2 | N-Acetyl L-Cysteine | 616-91-1 |
| L-Glutamic Acid | 56-86-0 | Creatine Monohydrate | 6020-87-7 |
| L-Cysteine Hcl Mono | 7048-04-6 | Creatine Anhydrous | 57-00-1 |
| L-Cysteine Hcl Anhy | 52-89-1 | L-Aspartic Acid | 56-84-8 |
| L-Cysteine | 52-90-4 | L-Alanine | 56-41-7 |
| D-Leucine | 328-38-1 | L-Theanine | 3081-61-6 |
| L-Lysine monohydrochloride | 657-27-2 | BCAA(Branched Chain Amino Acids) | |
Packing & Delivery
Our Company
Premium Ingredient Co., Ltd has been producing and distributing amino acids, vitamins, nutrition and food additives for decades, severing for more than 100 clients in the fields of food, beverage, diet supplements, cosmetic, pharmaceutical and animal feeding, exporting to dozens of countries. We supply these products only from the first class Chinese factories with over 10 years producing experiences.
With more than 10 years working experience, Premium Ingredient Co., Ltd offers not only quality products, but also good service, quick response, delivery in time, share up-to-the minute market information, supply one-stop-shop solutions.
We have established a long-term, extensive and deep cooperation with the source to ensure sufficient supplies, stable prices, and rapid shipment. Our 3rd party documents include ISO9001, ISO14001, HACCP, HALAL, KOSHER, GMP, FAMI-QS.
We expect you sending email or coming for negotiation.
Our Factory
Our Research
Our Certifications
FAQ
Q: How long is your delivery time?
A: Generally it is 1-2 weeks..
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What's your MOQ ?
A: For the high value product, our MOQ starts from 25kg.
Q: Is there a discount ?
A: Yes, for larger quantity, we always support with better price.
Q: How to confirm the Product Quality before placing orders ?
A: Our products conforms to the internation standard, such as USP, CP, FCC. We can also send you the samples for test. After you confirmed the samples, we will move to the next step for cooperation.
Q: How to start orders or make payments ?
A: You can send our your Purchase order ( if your company has ), or just send a simple confirmation by email or by Trade Manager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q: How do you treat quality complaint ?
A: We tested each batch before delivery and only qualified product will be delivery, in case you find any problem about the quality when you received and tested, send email to us, and enclose the photo of the products and 3rd party test reports, We negotiate to resolve these issues, recall or exchange goods, or compensate.
Q: why we choose you ?
A : We ensure ingredient purity, on-time delivery, process efficiency and the technical documents you require.
(1) quality: meet even exceed what you expect.
(2) prices: competitive
(3) service: one stop shop solution, respond soon, delivery fast, share the market information, share the new application of the product.
Our products are sold all over the world, you can rest assured.
