D-Alanine CAS 338-69-2 (H-DL-Val-OH) Assay 98.0~101.0% (Titration) Factory

Short Description:

Chemical Name: D-Alanine

Synonyms: H-D-Ala-OH; D-Ala 

CAS: 338-69-2

Assay: 98.0~101.0% (Titration on Dried Basis) 

Appearance: White Crystals or Crystalline Powder 

Amino Acids & Derivatives, Capacity 500 Tons/Year

Contact: Dr. Alvin Huang

Mobile/Wechat/WhatsApp: +86-15026746401

E-Mail: alvin@ruifuchem.com

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Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of D-Alanine (H-D-Ala-OH; D-Ala) (CAS: 338-69-2) with high quality. Ruifu Chemical supplys a series of amino acids & derivatives. Our products sell well in domestic and international market, trusted by customers.  We can provide COA, worldwide delivery, small and bulk quantities available. If you are interested in D-Alanine, Please contact: alvin@ruifuchem.com

Chemical Properties:

Chemical Name D-Alanine 
Synonyms H-D-Ala-OH; D-Ala; D-Ala-OH; D-(-)-Alanine; Dextro-Alanine; (R)-Alanine; L-a-Alanine; D(-)-α-Alanine; D-α-Alanine; D-2-Aminopropionic Acid; (R)-2-Aminopropionic Acid; (2R)-2-(Amino)propanoic Acid
Stock Status In Stock, Production Capacity 500 Tons per Year 
CAS Number 338-69-2
Molecular Formula C3H7NO2
Molecular Weight 89.09  
Melting Point 233.0~240.0℃(dec.)(lit.)
Density 1.161 
Water Solubility  Soluble in Water, 155 g/L (20℃), Almost Transparency
Solubility  Slightly Soluble in Ethanol, Insoluble in Acetone and Ether 
Storage Temp.  Sealed in Dry, Store at Room Temperature
COA & MSDS Available
Classification Amino Acids and Derivatives 
Brand Ruifu Chemical

Safety Information:

Hazard Codes  Xi - Irritant  TSCA  Yes
Risk Statements  36/37/38 Hazard Class         Irritant
Safety Statements  24/25-36-26            HS Code 2922491990               
WGK Germany 3    


Items Inspection Standards Results
Appearance White Crystals or Crystalline Powder Conforms          
Identification Meets the Requirements Conforms
Specific Rotation [α]20/D -14.3° to -15.3° (C=10, 6mol/L HCl)
State of Solution (Transmittance) ≥95.0% 98.9%
Chloride (Cl) ≤0.100% <0.100%
Iron (Fe) ≤10ppm <10ppm
Heavy Metals (Pb) ≤10ppm <10ppm 
Arsenic (As2O3) ≤2.0ppm <2.0ppm
Loss on Drying ≤0.20% (at 105℃ for 3 hours) 0.08%
Residue on Ignition (Sulfated) ≤0.20% 0.06%
Assay 98.0 to 101.0% (Titration on Dried Basis)     99.7%
Conclusion This Product by Inspection Accords with the Standard of AJI97
Main Uses Chiral Chemical; Food Additive; Pharmaceutical Intermediate; etc.

338-69-2 AJI 97 Test Method:

D-Alanine (H-DL-Val-OH) (CAS: 338-69-2) AJI 97 Test Method
D-Alanine, when dried, containes not less than 98.0 percent and not more than 101.0 percent of D-Alanine (C3H7NO2).
Identification: (1) To 5ml of a solution of D-Alanine (1→1000) add 1ml of 2% ninhydrin solution and heat for 3 minutes; a blue-purple color is produced.
(2) Dissolve 0.2g of D-Alanine in 10ml of dilute sulfuric acid (3→500), add 0.1g of potassium permanganate and heat on a small flame; a characteristic odor of acetaldehyde is perceptible.
Specific Rotation [α]20/D: Dried sample, C=10, 6mol/L HCl
State of Solution (Transmittance): 0.5g in 10ml of H2O, spectrophotometer, 430nm, 10mm cell thickness.
Chloride (Cl): 0.14g, A-1, ref: 0.40ml of 0.01mol/L HCl
Heavy Metals (Pb): 2.0g, (1), ref: 2.0ml of Pb Std. (0.01mg/ml)
Arsenic (As2O3): 1.0g, (1), ref: 2.0ml of As2O3 Std.
Loss on Drying: at 105℃ for 3 hours.
Residue on Ignition (Sulfated): AJI Test 13
Assay: Dried sample, 90mg, (1), 3ml of formic acid, 50ml of glacial acetic acid, 0.1mol/L HCLO4 1ml=8.909mg C3H7NO2 

Package & Storage:

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.


Sufficient Capacity: Sufficient facilities and technicians

Professional Service: One stop purchasing service

OEM Package: Custom package and label available

Fast Delivery: If within stock, three days delivery guaranteed

Stable Supply: Maintain reasonable stock    

Technical Support: Technology solution available

Custom Synthesis Service: Ranged from grams to kilos

High Quality: Established a complete quality assurance system


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 AssuranceStrict 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.

SamplesMost products provide free samples for quality evaluation, shipping cost should be paid by customers.

Factory AuditFactory audit welcome. Please make an appointment in advance.

MOQ? No MOQ. Small order is acceptable.

Delivery Time? If within stock, three days delivery guaranteed.

TransportationBy Express (FedEx, DHL), by Air, by Sea.

Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.

Custom SynthesisCan provide custom synthesis services to best fit your research needs.

Payment TermsProforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc. 


Function And Application of D-Alanine (H-D-Ala-OH; D-Ala) (CAS: 338-69-2)
1, D-Alanine is one important organic chiral source, it is used in chiral medicine, chiral additives, and it is chiral source of chiral synthesis in pharmaceutical and food industry. As one organic acid with optical activity, D-Alanine has irreplaceable function in some chiral chemical compounds asymmetrical combined sequence. And now, D-Alanine is used to manufacture new kind of broad-spectrum, D-Alaninol and compound new sweetness-Alitame.
2, D-Alanine is essential for cell metabolism and nutrient transport in the body.
3, D-Alanine is involved in the glucose-alanine cycle between tissues and the liver.
4, D-Alanine is used as a raw material for the synthesis of novel sweeteners and some chiral drug intermediates.
5, D-Alanine is mainly used to synthesize pantothenic acid and calcium pantothenate, carnosine, pamidronate, balsalazide, etc., and is widely used in medicine, feed, food and other fields. It is also used in electroplating corrosion inhibitors and biochemical reagents.
6, D-Alanine is mainly used as nutritional supplement and flavoring in food processing industry. It can also be used in the medical industry.
7. D-Alanine has a good freshness and can promote the effects of chemical flavorings; It has a peculiar sweetness and can improve the taste of the artificial sweeteners, improve the sourness of organic acids and the flavor of vinegar; Its sourness may help salt enter vegetables, improve the quality of salted or sauce-pickled vegetables, cut short the pickling duration and improve the flavor;
8. D-Alanine can be used as a corrector or buffer in the composition of wine or soft beverage, can prevent bubble wine from ageing and can decrease the odor of yeast;
9. Its function of antioxidation can be used in food processing. For instance, it can be used in oils, yolk jam, purified foods, sauce-pickled foods, and bra -pickled foods. It can both protect them from oxidation and improve their flavor;
10. D-Alanine can be used as a raw material for Vitamin B6 synthesis and material for the research on metabolism of amino acids by medical organisms or on a biochemical basis. 

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