L-胱氨酸 USP,AJI,EP

产品详情:

中文名	L-胱氨酸
英文名	L-Cystine
别名	胱氨酸 L-胱氨酸双硫丙氨酸双巯丙氨酸 L-胱胺酸双半胱氨酸双硫代氨基丙酸 L-膀胱氨基酸双-β-硫化丙氨酸 3,3'-二硫代二丙氨酸 L-Β,Β'-二硫代双丙氨酸 L-31, 3-二硫代双(2-氨基丙酸)
英文别名	Cystine L-Cystine 1-cystine Dicysteine (H-Cys-OH)2 H-(Cys)_2-OH L-Cystine,food grade 3,3'-Dithiodialanine 3,3'-dithiobis-l-alanin Alanine, 3,3'-dithiobis- (H-Cys-OH)2 (Disulfide bond) L-Cystine, synthetically derived 3,3'-dithiobis(2-aminopropanoicacid) 3,3'-Dithiobis(2-aminopropanoic acid) (-)-3,3-Dithiobis(2-aminopropionic acid) L(-)-3,3-Dithiobis(2-aminopropanoic acid) (r-(r,r))-3,3'-dithiobis(2-aminopropanoicacid) 3,3'-dithiobis(2-amino-,(r-(r,r))-propanoicaci (2R,2'S)-3,3'-disulfanediylbis(2-ammoniopropanoate) 2-Amino-3-[(2-amino-2-carboxyethyl)dithio]propanoic acid
CAS	56-89-3 24645-67-8
EINECS	200-296-3
化学式	C6H12N2O4S2
分子量	240.3
InChI	InChI=1/C3H6NO2S3/c5-3(6)2(4-7)1-9-8/h2H,1,4H2,(H,5,6)
InChIKey	LEVWYRKDKASIDU-IMJSIDKUSA-N
密度	1.68
熔点	>240 °C (dec.) (lit.)
沸点	468.2±45.0 °C(Predicted)
比旋光度	-224 º(c=2 in 1M HCl)
水溶性	0.112 g/L (25 ºC)
溶解度	1 m HCl: 100mg/ml
折射率	-222.5 ° (C=1, 1mol/
酸度系数	1.0, 2.1, 8.02, 8.71(at 25℃)
存储条件	2-8°C
稳定性	稳定。与强氧化剂不相容。
敏感性	Sensitive to light
外观	粉末/固体
颜色	White

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.