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A10157 3,5-Dimethyl-1H-pyrazole, 99%

CAS Number
67-51-6
Synonyms

Stock No. Size Price ($) Quantity Availability
A10157-18 50g 30.80
A10157-30 250g 125.00
A10157-0B 1000g 277.00
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3,5-Dimethyl-1H-pyrazole, 99%

MDL
MFCD00005243
EINECS
200-657-5

Chemical Properties

Formula
C5H8N2
Formula Weight
96.13
Melting point
105-108°
Boiling Point
218°
Storage & Sensitivity
Ambient temperatures.
Solubility
Soluble in water, methanol 0.1 g/mL.

Applications

3,5-Dimethyl-1H-pyrazole is combined with Chromium(VI)­ oxide, is a valuable reagent for oxidation of primary and secondary alcohols to carbonyl compounds. It reacts with malonic esters gives a family of cross-conjugated monomeric betaines. It is a common reagent for the preparation of pyrazolato ligated complexes. It is also used to prepare N-1-substituted derivatives having antibacterial activity.

Notes

Store away from oxidizing agents. Store in a cool, dry condition in well sealed containers.

Literature References

Hasnae Bendaha; Lisa Yu; Rachid Touzani; Rachid Souane; Guri Giaever; Corey Nislow; Charles Boone; Sghir El Kadiri; Grant W. Brown; Mohammed Bellaoui. New azole antifungal agents with novel modes of action: Synthesis and biological studies of new tridentate ligands based on pyrazole and triazole. European Journal of Medicinal Chemistry. 2011, 46 (9), 4117-4124.

F Castro González; A Martínez Garza. Comparative study of analgesics. Practica odontologica. 1986, 7 (2), 30-34.

The combination with Chromium(VI)­ oxide, 12522 is a valuable reagent for oxidation of primary and secondary alcohols to carbonyl compounds in very high yields: Tetrahedron Lett., 4499 (1973). With Pyridinium chlorochromate, A11752, allylic alcohols are oxidized selectively in the presence of secondary alcohols: J. Org. Chem., 48, 4766 (1983).

Reaction of pyrazoles with malonic esters gives a family of cross-conjugated monomeric betaines: Synthesis, 629 (1989):

GHS Hazard and Precautionary Statements

Hazard Statements: H302-H361fd-H373

Harmful if swallowed. Suspected of damaging fertility. Suspected of damaging the unborn child. May cause damage to organs through prolonged or repeated exposure.

Precautionary Statements: P201-P202-P260-P264b-P270-P281-P301+P312-P308+P313-P330-P501c

Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use personal protective equipment as required. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. IF exposed or concerned: Get medical advice/attention. Rinse mouth. Dispose of contents/ container to an approved waste disposal plant

Other References

Beilstein
106325
Harmonized Tariff Code
2933.19
TSCA
Yes
RTECS
UQ6477600

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