41019

熔点标准品 235-237°C

analytical standard

• 别名: 咖啡因, 1,3,7-三甲基黄嘌呤
• 经验公式（希尔记法）: C₈H₁₀N₄O₂
• CAS号: 58-08-2
• 分子量: 194.19
• Beilstein: 17705
• EC號碼: 200-362-1
• MDL號碼: MFCD00005758
• 分類程式碼代碼: 12352210
• PubChem物質ID: 329756046
• NACRES: NA.24

属性

• 等級: analytical standard
• 品質等級: 100
• 儲存期限: limited shelf life, expiry date on the label
• mp: 234-236.5 °C (lit.); 235-237 °C (±0.3°C)
• 應用: food and beverages; pharmaceutical
• 格式: neat
• SMILES 字串: CN1C(=O)N(C)c2ncn(C)c2C1=O
• InChI: 1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3
• InChI 密鑰: RYYVLZVUVIJVGH-UHFFFAOYSA-N
• 基因資訊: human ... ADORA1(134) , ADORA2A(135) , ADORA2B(136) , ADORA3(140)

说明

一般說明

Melting point standard 235-237 °C, caffeine is useful to calibrate melting point instruments, in the thermodynamic mode of measurement. The value of its melting point is determined with an average of 6 to 12 measurements using a Büchi B-545 instrument that is calibrated against primary standards.

應用

Caffeine melting point standard 235-237 °C finds its use in the characterization of pure chemicals and pharmaceutical compounds.

特點和優勢

• Melting point calibration standard traceable to primary standards (LGC, London)
• Grade: Analytical Standard
• Standard deviation up to ± 0.3 °C
• Provided with certificates of analysis and safety data sheet

推薦產品

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

安全信息

• 象形圖: GHS07
• 訊號詞: Warning
• 危險聲明: H302
• 防範說明: P264 - P270 - P301 + P312 - P501
• 危險分類: Acute Tox. 4 Oral
• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable
• 個人防護裝備: dust mask type N95 (US), Eyeshields, Faceshields, Gloves