1-甲基-5-羟基吡唑 | 33641-15-5

• 物质功能分类: 有机原料 - 杂环化合物
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 1-甲基-5-羟基吡唑
• 中文别名: 5-羟基-1-甲基-1H-吡唑；5-羟基-1-甲基吡唑
• 英文名称: 5-Hydroxy-1-methylpyrazole
• 英文别名: 1-methyl-5-hydroxypyrazole；1-methyl-5-hydroxy-1H-pyrazole；1-methyl 5-hydroxypyrazole；1-methyl-5 hydroxypyrazole；5-hydroxy-N-methylpyrazole；N-methyl-5-hydroxypyrazole
• CAS: 33641-15-5
• 化学式: C₄H₆N₂O
• 分子量: 98.1044
• InChiKey: CMXOTACIOGGSNH-UHFFFAOYSA-N

物化性质

• 熔点：
  110-114 °C
• 沸点：
  217.7±13.0 °C(Predicted)
• 密度：
  1.22±0.1 g/cm3(Predicted)
• 溶解度：
  溶于DMSO、甲醇

计算性质

• 辛醇/水分配系数(LogP)：
  0.13
• 重原子数：
  7.0
• 可旋转键数：
  0.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  38.05
• 氢给体数：
  1.0
• 氢受体数：
  3.0

安全信息

• 危险等级：
  IRRITANT
• 安全说明：
  S26,S39
• 海关编码：
  2933199090
• 危险品标志：
  Xn
• 危险类别码：
  R22,R41,R37/38
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335
• 储存条件：
  存放于惰性气体中，避免接触空气。

SDS

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SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifiers
Product name : 5-Hydroxy-1-methyl-1H-pyrazole
REACH No. : A registration number is not available for this substance as the substance
or its uses are exempted from registration, the annual tonnage does not
require a registration or the registration is envisaged for a later
registration deadline.
CAS-No. : 33641-15-5
Relevant identified uses of the substance or mixture and uses advised against
Identified uses : Laboratory chemicals, Manufacture of substances

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SECTION 2: Hazards identification
Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
Acute toxicity, Oral (Category 4), H302
Skin irritation (Category 2), H315
Serious eye damage (Category 1), H318
Specific target organ toxicity - single exposure (Category 3), Respiratory system, H335
For the full text of the H-Statements mentioned in this Section, see Section 16.
Classification according to EU Directives 67/548/EEC or 1999/45/EC
Xn Harmful R22, R37/38, R41
For the full text of the R-phrases mentioned in this Section, see Section 16.
Label elements
Labelling according Regulation (EC) No 1272/2008
Pictogram
Signal word Danger
Hazard statement(s)
H302 Harmful if swallowed.
H315 Causes skin irritation.
H318 Causes serious eye damage.
H335 May cause respiratory irritation.
Precautionary statement(s)
P261 Avoid breathing dust.
P280 Wear protective gloves/ eye protection/ face protection.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove
contact lenses, if present and easy to do. Continue rinsing.
Supplemental Hazard none
Statements
Other hazards - none

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SECTION 3: Composition/information on ingredients
Substances
Synonyms : 1-Methyl-1H-pyrazol-5-ol
1-Methylpyrazol-5-ol
5-Hydroxy-1-methylpyrazole
1-Methyl-5-hydroxy-1H-pyrazole
1-Methyl-5-hydroxypyrazole
2-Methyl-2H-pyrazol-3-ol
Formula : C4H6N2O
Molecular Weight : 98,1 g/mol
CAS-No. : 33641-15-5
Hazardous ingredients according to Regulation (EC) No 1272/2008
Component Classification Concentration
5-Hydroxy-1-methyl-1H-pyrazole
CAS-No. 33641-15-5 Acute Tox. 4; Skin Irrit. 2; Eye <= 100 %
Dam. 1; STOT SE 3; H302,
H315, H318, H335
Hazardous ingredients according to Directive 1999/45/EC
Component Classification Concentration
5-Hydroxy-1-methyl-1H-pyrazole
CAS-No. 33641-15-5 Xn, R22 - R37/38 - R41 <= 100 %
For the full text of the H-Statements and R-Phrases mentioned in this Section, see Section 16

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SECTION 4: First aid measures
Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in
section 11
Indication of any immediate medical attention and special treatment needed
no data available

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SECTION 5: Firefighting measures
Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Carbon oxides, nitrogen oxides (NOx)
Advice for firefighters
Wear self contained breathing apparatus for fire fighting if necessary.
Further information
no data available

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SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure
adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.
For personal protection see section 8.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed
containers for disposal.
Reference to other sections
For disposal see section 13.

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SECTION 7: Handling and storage
Precautions for safe handling
Avoid contact with skin and eyes. Avoid formation of dust and aerosols.
Provide appropriate exhaust ventilation at places where dust is formed.
For precautions see section 2.2.
Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Store under inert gas.
Specific end use(s)
Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

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SECTION 8: Exposure controls/personal protection
Control parameters
Components with workplace control parameters
Exposure controls
Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and
at the end of workday.
Personal protective equipment
Eye/face protection
Face shield and safety glasses Use equipment for eye protection tested and approved under
appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique
(without touching glove's outer surface) to avoid skin contact with this product. Dispose of
contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and
the standard EN 374 derived from it.
Body Protection
Complete suit protecting against chemicals, The type of protective equipment must be selected
according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection
Where risk assessment shows air-purifying respirators are appropriate use a full-face particle
respirator type N100 (US) or type P3 (EN 143) respirator cartridges as a backup to engineering
controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use
respirators and components tested and approved under appropriate government standards such
as NIOSH (US) or CEN (EU).
Control of environmental exposure
Do not let product enter drains.

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SECTION 9: Physical and chemical properties
Information on basic physical and chemical properties
a) Appearance Form: solid
b) Odour no data available
c) Odour Threshold no data available
d) pH no data available
e) Melting point/freezing Melting point/range: 110 - 114 °C
point
f) Initial boiling point and no data available
boiling range
g) Flash point no data available
h) Evapouration rate no data available
i) Flammability (solid, gas) no data available
j) Upper/lower no data available
flammability or
explosive limits
k) Vapour pressure no data available
l) Vapour density no data available
m) Relative density no data available
n) Water solubility no data available
o) Partition coefficient: n- log Pow: -0,07
octanol/water
p) Auto-ignition no data available
temperature
q) Decomposition no data available
temperature
r) Viscosity no data available
s) Explosive properties no data available
t) Oxidizing properties no data available
Other safety information
no data available

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SECTION 10: Stability and reactivity
Reactivity
no data available
Chemical stability
Stable under recommended storage conditions.
Possibility of hazardous reactions
no data available
Conditions to avoid
no data available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
Other decomposition products - no data available
In the event of fire: see section 5

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SECTION 11: Toxicological information
Information on toxicological effects
Acute toxicity
no data available
Inhalation: no data available
Skin corrosion/irritation
no data available
Serious eye damage/eye irritation
no data available
Respiratory or skin sensitisation
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
IARC: No component of this product present at levels greater than or equal to 0.1% is identified as
probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
no data available
Specific target organ toxicity - single exposure
Inhalation - May cause respiratory irritation.
Specific target organ toxicity - repeated exposure
no data available
Aspiration hazard
no data available
Additional Information
RTECS: Not available
To the best of our knowledge, the chemical, physical, and toxicological properties have not been
thoroughly investigated.

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SECTION 12: Ecological information
Toxicity
no data available
Persistence and degradability
no data available
Bioaccumulative potential
no data available
Mobility in soil
no data available
Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
Other adverse effects
no data available

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SECTION 13: Disposal considerations
Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company. Dissolve or mix the material
with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber.
Contaminated packaging
Dispose of as unused product.

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SECTION 14: Transport information
UN number
ADR/RID: - IMDG: - IATA: -
UN proper shipping name
ADR/RID: Not dangerous goods
IMDG: Not dangerous goods
IATA: Not dangerous goods
Transport hazard class(es)
ADR/RID: - IMDG: - IATA: -
Packaging group
ADR/RID: - IMDG: - IATA: -
Environmental hazards
ADR/RID: no IMDG Marine pollutant: no IATA: no
Special precautions for user
no data available

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SECTION 15 - REGULATORY INFORMATION
N/A

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

用途

1-甲基-5-羟基吡唑是一种用于制备除草剂的中间体。

合成方法

采用氧化还原法：将1-甲基-5-氨基吡唑与过量的过氧化氢在苯或二甲基甲酰胺中反应数小时，即可得到1-甲基-5-羟基吡唑。

反应信息

• 作为反应物：
  描述：

  1-甲基-5-羟基吡唑 生成 4-(2,4-dichlorobenzoyl)-1-methyl-5-(4-nitrobenzyloxy)-pyrazole
  参考文献：
  名称：

  TANAKA, KISEHJ;TANIGUTI, MASAKADZU;BABA, MASATSUGU;IKAI, TAKASI;NAVAMAKI,+

  摘要：

  DOI：
• 作为产物：
  描述：

  1-甲基-5-羟基吡唑-4-羧酸甲酯 在 硫酸 作用下， 反应 8.0h， 以18.6 g的产率得到1-甲基-5-羟基吡唑
  参考文献：
  名称：

  一种吡唑类除草剂中间体1-甲基-5羟基吡唑的制备方法

  摘要：

  本发明属于吡唑类除草剂中间体制备技术领域，具体涉及一种吡唑类除草剂中间体1‑甲基‑5羟基吡唑的制备方法。所述1‑甲基‑5羟基吡唑的制备方法，包括：(1)在碱存在条件下，化合物(1)丙二酸二甲酯与甲酰胺类化合物、烷基化试剂在溶剂中反应，生成化合物(2)；(2)所得化合物(2)与甲基肼/水合肼在溶剂中进行环化反应，再经酸进行水解、脱羧，得到化合物(3)。本发明利用DMF、烷基化试剂与化合物(1)反应得到化合物(2)；所得化合物(2)在与甲基肼(或水合肼)闭环反应时选择性好，可获得更高收率和纯度的目标产物化合物(3)。而且，本发明所述合成方法中使用的原料腐蚀性较弱，易回收，且价格相对低廉，有利于工业化生产。

  公开号：

  CN112574111B

文献信息

• MTA-Cooperative PRMT5 Inhibitors
  申请人：Mirati Therapeutics, Inc.

  公开号：US20210078994A1

  公开（公告）日：2021-03-18

  The present invention relates to compounds that inhibit Protein Arginine N-Methyl Transferase 5 (PRMT5) activity. In particular, the present invention relates to compounds, pharmaceutical compositions and methods of use, such as methods of treating cancer using the compounds and pharmaceutical compositions of the present invention.

  本发明涉及抑制蛋白精氨酸N-甲基转移酶5（PRMT5）活性的化合物。具体而言，本发明涉及化合物、药物组合物和使用方法，例如使用本发明的化合物和药物组合物治疗癌症的方法。
• Room Temperature Carbonylation of (Hetero) Aryl Pentafluorobenzenesulfonates and Triflates using Palladium-Cobalt Bimetallic Catalyst: Dual Role of Cobalt Carbonyl
  作者：Jayan T. Joseph、Ayyiliath M. Sajith、Revanna C. Ningegowda、Sheena Shashikanth

  DOI：10.1002/adsc.201600736

  日期：2017.2.2

  method for the carbonylation of (hetero) aryl pentafluorobenzenesulfonates and triflates under exceptionally mild conditions using palladium/dicobalt octacarbonyl [Pd/Co2(CO)8] has been developed. Besides acting as carbon monoxide (CO) source, Co2(CO)8 enhances the reaction rate by accelerating the CO insertion through an in situ generated bimetallic palladium cobalt tetracarbonyl [Pd‐Co(CO)4] complex

  已经开发了一种在异常温和的条件下使用钯/二钴八羰基[Pd / Co 2（CO）8 ]对（杂）芳基五氟苯磺酸盐和三氟甲磺酸酯进行羰基化的有效方法。除了充当一氧化碳（CO）源外，Co 2（CO）8还可以通过原位生成的双金属钯四羰基钴[Pd-Co（CO）4）加速CO的插入，从而提高反应速率。] 复杂的。在优化的反应条件下，各种活化和失活的，以及位阻和杂芳族底物的羰基化反应在室温下均能有效进行。生物学上相关的异古瓦汀和拉扎贝米中间体的高化学选择性和改进的合成方法突出了其作为有价值的合成方法的范围。该协议的通用性进一步扩展到其他亲电试剂（溴化物，氯化物和甲苯磺酸盐）。
• SUBSTITUTED 7-AZABICYCLES AND THEIR USE AS OREXIN RECEPTOR MODULATORS
  申请人：COATE Heather R.

  公开号：US20160046640A1

  公开（公告）日：2016-02-18

  The present invention is directed to compounds of Formula I: wherein ring A is phenyl, naphihalenyl, pyridyl, quinolinyl, isoquinolinyl, imidazopyridyl, furanyi, tlisazolyl, isoxazolvl, pyrazolyl, imidazothiazolyi, benzimidazolyl, or indazolyi; R 1 is H, alky], aikoxy, hydroxyalkylene, OH, halo, phenyl, triazolyl, oxazolyl, isoxazofyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazmyl, piperazinyl, pyrazolyl, oxadiazolvl, pyrrolidinyl, thiophenyi, morpholinyl, or dialkyiamino; R 2 is H, alkyl, aikoxy, hydroxyalkylene, or halo; Z is NH, N-alkyl, or O; R 5 is pyridyl, pyrimidinyl, pyrazinyl, pyridazmyl, qumazolinyi, quinoxalinyl, pyrazolyl, benzoxazolyl, imidazopyrazinyl, triazolopyrazinyl, optionally substituted with a one or two substituents independently selected from the group consisting of alkyl, aikoxy, or halo; and n is 0 or 1, Methods of making the compounds of Formula 1 are also described. The invention also relates to pharmaceutical compositions comprising compounds of Formula I. Methods of using the compounds of the invention are also within the scope of the invention.

  本发明涉及式I的化合物：其中环A为苯基、萘基、吡啶基、喹啉基、异喹啉基、咪唑吡啉基、呋喃基、噻唑基、异噁唑基、吡唑基、咪唑噻唑基、苯并咪唑基或吲哚基；R1为H、烷基、烷氧基、羟基烷基、OH、卤素、苯基、三唑基、噁唑基、异噁唑基、吡啶基、嘧啶基、吡嗪基、吡啶并嗪基、哌嗪基、吡唑基、噁二唑基、吡咯烷基、噻吩基、吗啉基或二烷氨基；R2为H、烷基、烷氧基、羟基烷基或卤素；Z为NH、N-烷基或O；R5为吡啶基、嘧啶基、吡嗪基、吡啶并嗪基、喹唑啉基、喹喹啉基、吡唑基、苯并噁唑基、咪唑吡嗪基、三唑咪唑基，可选地取代一个或两个独立选择自烷基、烷氧基或卤素的基团；n为0或1，还描述了制备式I化合物的方法。本发明还涉及包含式I化合物的药物组合物。本发明还涉及使用该化合物的方法。
• [EN] HETEROARYL-ETHER FUSED AZADECALIN GLUCOCORTICOID RECEPTOR MODULATORS<br/>[FR] COMPOSÉS D'AZADÉCALINE FUSIONNÉS HÉTÉROARYLE ÉTHER UTILISÉS EN TANT QUE MODULATEURS DU RÉCEPTEUR DES GLUCOCORTICOÏDES
  申请人：CORCEPT THERAPEUTICS INC

  公开号：WO2015077537A1

  公开（公告）日：2015-05-28

  The present invention provides heteroaryl ether fused azadecalin compounds and methods of using the compounds as glucocorticoid receptor modulators.

  本发明提供了杂环醚融合的氮杂二环烷化合物，并提供了使用这些化合物作为糖皮质激素受体调节剂的方法。
• NOVEL MACROCYCLIC DERIVATIVES, PROCESS FOR PREPARING SAME AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME
  申请人：LES LABORATOIRES SERVIER

  公开号：US20200253993A1

  公开（公告）日：2020-08-13

  Compound of formula (I): wherein A 1 , A 2 , R a , R b , R c , R d , R 3 , R 4 , X, Y and G are as defined in the description, and their use in the manufacture of medicaments.

  公式(I)的化合物： 其中A1、A2、Ra、Rb、Rc、Rd、R3、R4、X、Y和G按描述中定义， 以及它们在药品制造中的用途。