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L-半胱氨酸盐酸盐无水物CAS52-89-1

L-半胱氨酸盐酸盐无水物

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L-半胱氨酸盐酸盐无水物CAS52-89-1


Products Description


L-cysteine HCl anhy is the hydrochloride salt of L-cysteine, a semi-essential, sulfur-containing amino acid and is an important structural component in many proteins. Supplementation of L-cysteine supports the immune system and healthy metabolic processes as a component of protein synthesis, in addition to supporting cellular structural components in the form of the antioxidant, glutathio


CAS NO.: 52-89-1

Molecular Formula: C3H7NO2S.HCl

Molecular Weight: 157.62


Basic Info


Product Name:

L-(+)-Cysteine hydrochloride

Other Name:

L-Cysteine,hydrochloride (1:1);Cysteine,hydrochloride,L-;L-Cysteine,hydrochloride;Cysteine chlorohydrate;Cysteine hydrochloride;Cystein chloride;L-(+)-Cysteine hydrochloride;(R)-Cysteine hydrochloride;WR 348;(R)-1-Carboxy-2-mercaptoethanaminium chloride;CSKE 200;(2R)-2-Amino-3-sulfanylpropanoic acid hydrochloride;122641-75-2;122882-13-7;124558-06-1;29844-56-2

CAS No.:

52-89-1

Molecular Formula:

C3H7NO2S.ClH

InChIKeys:

InChIKey=IFQSXNOEEPCSLW-DKWTVANSSA-N

Molecular Weight:

157.61900

Exact Mass:

156.99600

EC Number:

200-157-7

UNII:

A9U1687S1S

DSSTox ID:

DTXSID0020367

Color/Form:

Colorless crystals|White crystals

HScode:

2930909090

Categories:

Amino Acids and Derivatives

Characteristics


Appearance: DryPowder
Melting Point: 170-178 °C (decomp)
Boiling Point:293.9ºC at 760 mmHg
Flash Point: 131.5ºC
Water Solubility: SOLUBLE
Storage Conditions: Store at RT.
Vapor Pressure: 6.73X10-7 mm Hg at 25 °C (est)
Toxicity: LD50 intraperitoneal in mouse: 1250mg/kg
Henrys Law Constant: Henry's Law constant = 5.30X10-11 atm-cu m/mol at 25 °C (est)
Dissociation Constants: pK1 1.71 /carboxylic/; pK2 8.33 /amine/; pK3 10.78 /sulfide/
Experimental Properties: Readily oxidizes to form a dimeric amino acid, cystine, in which the two cysteines are linked via a disulfide bridge, a common structural feature in proteins. Amino Acids and Proteins, D.M. Greenberg, Ed. (Charles C. Thomas, Springfield, IL, 1951) 950 pp.|In neutral or slightly alkaline aqueous solution it is oxidized to cystine by air. More stable in acidic solutions.|MP (anhydrous): 178 °C (decomposes). Specific optical rotation: +6.53 deg at 25 °C/D (calculated as cysteine) (c = 2 in 5M HCl); solubility >100 (20 °C) g/100 g H2O /L-Cysteine hydrochloride monohydrate/|Hydroxyl radical reaction rate constant = 7.96X10-11cu cm/molecule-sec at 25 °C (est)


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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



Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

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OEM

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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.






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