CasNo.555-30-6,High Quality L-Tyrosine, 3-hydroxy-a-methyl,(555-30-6) Suppliers

1 Gram	FOB Price: USD 1.0000

Min.Order :1 Gram
Purity: 98% HPLC
Payment Terms : L/C,D/A,D/P,T/T,

Keywords

555-30-6 L-Tyrosine, 3-hydroxy-a-methyl L-Tyrosine, 3-hydroxy-a-methyl Price

Quick Details

Appearance:White powder
Application:pharmaceutical intermediates
PackAge:1kg or 25Kg drum
ProductionCapacity:3000|Metric Ton|Year
Storage:Store in dry, dark and ventilated place
Transportation:By air or by sea. Prompt delivery

Superiority:

Qingdao Sigma Chemical Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, peptide,Nootropis etc API, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc.

Our Laboratory is located in shandong province. There are 15 experts in our research team. Talented personnel and well-equipped laboratory makes rigorous and professional quality control possible. Lyphar Biotech is equipped with various detection devices, such as HPLC, GC, Spectrophotometer, AAS, Polarimeter, Auto titrators, BOD Incubators, COD Incubators, Melting point apparatus and so on.

The aim of QDSIGMA is a quality policy that "Elements in the system all have been satisfied, Personnel has been trained; Every batch of material is checked, Each procedure guarantees the quality; Every bag of our products is top grade, Service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.

QDSIGMA has become the "Top 500 Chinese manufacturing companies","Top 20 of global chemical sales".QDSIGMA has 21 subsidiaries and holding companies.

We promise our customer following items

1.Reasonable price:
2.Low moq:No worry about the low moq, our moq is 1 gram or lower.
3.Good and efficient service,Fast Delivery
4.Super-good quality

Contact us
If you have any further questions or need a sample,Please do not hesitate to contact us.

Jessica | Senior Sales | Qingdao Sigma chemical Co.,Ltd

| Address:No 70,Shandong Road,Qingdao city,China

Details:

Chemical name: Methyldopa

CAS NO: 41372-08-1

Purity: 98.5%-101.0%

Appearance: White fine powder

Molecular Formula: C10H13NO4·3/2H2O

Molecular Weight: 238.24

Melting point : ≥300 °C

Package: 25 kg/drum

Hazard class: None

HS code: 2942000000

Product Name	Methyldopa
Characters	white to yellowish-white fine powder	Odor	Characteristic
Assay (%)	≥ 99.00%	Melting Point	≥300 °C
Molecular Formula	C10H13NO4	Molecular Weight	211.21
Cas No.	555-30-6	EINECS No.	209-089-2
Standard	USP/BP/EP
Main Functions	Antihypertensive agent.
Application	Widely used in pharmaceutical
Package	Aluminum foil bag inside + carton box outside;1kg/bag+25kg/drum
Shelf Life	36 months
Storage	Store in sealed containers at cool & dry place. Keep away from light, moisture etc.

Methyldopa is used in the clinical treatment of the following disorders: Hypertension (or high blood pressure), and Gestational hypertension (or pregnancy-induced hypertension) and pre-eclampsia.

Puhopharma specializes in controling the quality and reducing the impurities of Methyldopa powder. Our Methyldopa powder is with the best quality and the most competitive price in China.

Specification of our Methyldopa

Item	Requirements	Test Results
Description	A white or yellow crystalline powder	white crystalline powder
Solubeness	Meets the Requirements	Meets the Requirements
Identification
IR	conform	conform
Test B,C,D	Positive	Positive
Appearance of solution	Not more colored than BY6 and B6	Meets the Requirements
Acidity(0.1N NaOH)	Not more than 0.5ml/g	0.08ml/g
Optical rotation	-1.10°~-1.23°	-1.15°
A(1%,1cm)	122-137	134
Methoxymethyldopa and related substances	≤0.50%	Meets the Requirements
Water	10.0%-13.0%	10.7%
Sulphated ash	≤0.10%	0.02%
Heavy Metal	≤10ppm	Complies
Assay	98.5%-101.0%	99.7%
Conclusion	Meets the Requirements

SPECIFICATION

Standard: BP/USP

ANALYSIS	SPECIFICATION	RESULTS
Appearance	White or yellowish white crystalline powder	yellowish white crystalline powder
Solubility	Meets the requirements	complies
Identification
IR	The sample comparing with the spectrum obtained with standard	complies
Absorbance	3% value of the standard	1.6%
A (1%,1cm)	122~137	135
Color reaction	positive	positive
Appearance of solution	Not more than colored than BY6 and B6	Clear and less thanBY6
Specific rotation	-25°~-28°	-26.3°
Acidity (0.1N NaOH)	Not more than 0.5ml/g	0.10ml/g
Optical rotation	-1.10° ~ -1.23°	-1.16°
Water	10.0%~13.0%	11.2%
Sulphated ash	Not more than 0.1%	0.03%
Heavy metals	Not more than 10ppm	Less than 10ppm
Residual solvents	Meet the requirements	complies
Assay	98.0%~101.0%	99.3%
Methoxymethyldopa and related substances	Not more than 0.5%	Less than 0.5%