VIOLURIC ACID
- Product Name
- VIOLURIC ACID
- CAS No.
- 87-39-8
- Chemical Name
- VIOLURIC ACID
- Synonyms
- VLA;5-(Hydroxyimino)pyrimidine-2,4,6(1H,3H,5H)-trione;NSC 56338;VIOLURIC ACID;ALLOXAN-5-OXIME;Violuric Acid Violuric acid hydrate,95%;5-ISONITROSOBARBITURIC ACID;5-HYDROXYIMINOBARBITURIC ACID;87-39-8 C4H3N3O4 VIOLURIC ACID
- CBNumber
- CB0477879
- Molecular Formula
- C4H3N3O4
- Formula Weight
- 157.08
- MOL File
- 87-39-8.mol
VIOLURIC ACID Property
- Melting point:
- 240-250 °C (dec.)
- Boiling point:
- 281.7°C (rough estimate)
- Density
- 1.8278 (rough estimate)
- vapor pressure
- 0Pa at 25℃
- refractive index
- 1.5000 (estimate)
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- solubility
- Aqueous Acid (Sparingly), DMSO (Sparingly), Methanol (Slightly)
- pka
- 4.7(at 25℃)
- form
- Solid
- color
- Off-White
- Water Solubility
- 7.04g/L at 20℃
- Merck
- 10000
- Stability:
- Hygroscopic
- LogP
- -1.2 at 25℃
- CAS DataBase Reference
- 87-39-8(CAS DataBase Reference)
- EPA Substance Registry System
- 2,4,5,6(1H,3H)-Pyrimidinetetrone, 5-oxime (87-39-8)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P321Specific treatment (see … on this label).
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P362Take off contaminated clothing and wash before reuse.
N-Bromosuccinimide Price
- Product number
- V634600
- Product name
- VioluricAcid
- Packaging
- 2.5g
- Price
- $115
- Updated
- 2021/12/16
- Product number
- V634600
- Product name
- VioluricAcid
- Packaging
- 25g
- Price
- $525
- Updated
- 2021/12/16
- Product number
- 67480
- Product name
- VioluricAcid
- Packaging
- 25g
- Price
- $1050
- Updated
- 2021/12/16
- Product number
- CHM0013570
- Product name
- ALLOXAN-5-OXIME
- Purity
- 95.00%
- Packaging
- 25G
- Price
- $1199.42
- Updated
- 2021/12/16
- Product number
- CD11038820
- Product name
- 5-(Hydroxyimino)pyrimidine-2,4,6(1H,3H,5H)-trione
- Purity
- 97%
- Packaging
- 10g
- Price
- $40
- Updated
- 2021/12/16
VIOLURIC ACID Chemical Properties,Usage,Production
Chemical Properties
LIGHT YELLOW CRYSTALLINE POWDER
Uses
Violuric Acid, can be used for the synthesis of some novel pyrimidines fused aza-heterocycles, having broad spectrum of pharmacological activities, such as 2-Methyloxazolo[5,4-d]pyrimidine-5,7(4H,6H)-dione (M324600).
Uses
Analytical reagent for chromatographic separation of cations. Forms chelates: Leermakers, Hoffman, J. Am. Chem. Soc. 80, 5663 (1958).
Reactions
Violuric acid readily deprotonated to give salts of the anion [ON=C(CONH)2CO]?, which are often deeply colored.
Flammability and Explosibility
Not classified
Synthesis
67-52-7
87-39-8
The general procedure for the synthesis of 5-(oxime-based)pyrimidine-2,4,6(1H,3H,5H)-trione from barbituric acid was as follows: firstly, 352 g of sodium nitrite was weighed and dissolved in 800 ml of deionized water to prepare an aqueous sodium nitrite solution for spare. In a 10L three-necked flask, 360g of sodium hydroxide and 4L of deionized water were added, and mechanical stirring was turned on until complete dissolution. When the temperature of the solution was reduced to about 30°C, 491 g of barbituric acid was added slowly to ensure that it was completely dissolved in the sodium hydroxide solution. Subsequently, the pre-prepared aqueous sodium nitrite solution was added to the reaction system, at which time the temperature of the mixed solution should be maintained between 10-15°C. Under continuous stirring, a mixed solution consisting of 1.2 L of concentrated hydrochloric acid and 2 L of deionized water was slowly added dropwise, and the rate of dropwise acceleration was controlled to maintain the reaction temperature in the range of 10-20 °C. During the dropwise addition, the formation of yellow-red solid and the release of orange gas were observed. After the dropwise addition, the temperature of the reaction system was adjusted to room temperature (25 °C) and the reaction was continued with stirring for about 16 hours. At the end of the reaction, the orange gas produced in the reaction was first removed. Then, the reaction solution was vacuum filtered using a vacuum pump and the filter cake was collected. The filter cake was washed sequentially with deionized water and a small amount of methanol, and finally dried under vacuum to obtain 513 g of the light purple target product 5-(oxime-based)pyrimidine-2,4,6(1H,3H,5H)-trione in a molar yield of 85.2%.
References
[1] Patent: CN108440419, 2018, A. Location in patent: Paragraph 0055; 0061; 0068; 0075
[2] Justus Liebigs Annalen der Chemie, 1864, vol. 130, p. 158
[3] Chemische Berichte, 1875, vol. 8, p. 613
[4] European Journal of Organic Chemistry, 2009, # 26, p. 4525 - 4533
VIOLURIC ACID Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from VIOLURIC ACID manufacturers
- Product
- VIOLURIC ACID 87-39-8
- Price
- US $0.00/g
- Min. Order
- 1g
- Purity
- 98%
- Supply Ability
- 20tons
- Release date
- 2024-09-19
- Product
- VIOLURIC ACID 87-39-8
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-08-11
- Product
- VIOLURIC ACID 87-39-8
- Price
- US $8.80/KG
- Min. Order
- 1KG
- Purity
- 97%-99%
- Supply Ability
- 100kg
- Release date
- 2019-07-04