Search Results
Pyridine ACS Reagent 99% 500ml
Item #:
SIG/360570-500ML
Supplier #: 360570-500ML
Supplier #: 360570-500ML
SIGMA-ALDRICH CORPORATION Part No. 360570-500ML
Formula: C5H5N Formula Weight: 79.10
CAS No.: 110-86-1 Purity: ≥99.0% Density: 0.978 g/mL at 25 °C(lit.) Packaging: 1, 2, 2.5, 4 x 4 L in glass bottle Packaging: 100, 500 mL in glass bottle
Formula: C5H5N Formula Weight: 79.10
CAS No.: 110-86-1 Purity: ≥99.0% Density: 0.978 g/mL at 25 °C(lit.) Packaging: 1, 2, 2.5, 4 x 4 L in glass bottle Packaging: 100, 500 mL in glass bottle
Potassium Citrate Tribasic Monohydrate
Item #:
SIG/C8385-500G
Supplier #: C8385-500G
Supplier #: C8385-500G
SIGMA-ALDRICH CORPORATION Part No. C8385-500G
Formula: C6H5K3O7 + H2O Formula Weight: 324.41
CAS No.: 6100-05-6 Purity: ≥98% (GC/titration) Packaging: 1 kg in poly bottle Packaging: 500 g in poly bottle
Formula: C6H5K3O7 + H2O Formula Weight: 324.41
CAS No.: 6100-05-6 Purity: ≥98% (GC/titration) Packaging: 1 kg in poly bottle Packaging: 500 g in poly bottle
Petroleum Ether ACS Reagent 4L
Item #:
SIG/184519-4L
Supplier #: 184519-4L
Supplier #: 184519-4L
SIGMA-ALDRICH CORPORATION Part No. 184519-4L
CAS Number: 8032-32-4 MDL No.: MFCD00081849 Boiling Point: 30-60 C(lit.); 35-60 C Density: 0.64 g/mL at 25 C(lit.) Refractive Index: n20/D 1.363(lit.) EC Number: 232-453-7 UNSPSC Code: 12190000 General description: Petroleum ether is a mixture of low boiling aliphatic hydrocarbons (mainly hexane and pentane) that is generally used as a laboratory solvent. General description: Petroleum ether is a colorless liquid. Extracts of leaves of Litchi chinensis Gaertn. (Sapindaceae) have been prepared in petroleum ether and were evaluated for antiinflammatory, analgesic and antipyretic activities. Pentanes and hexanes are the major constituents of petroleum ether. Application: Petroleum ether has been used for the analysis of total dietary fiber content by employing a total dietary fibre assay kit. It may be used in the absorption chromatographic purification of organic compounds.
CAS Number: 8032-32-4 MDL No.: MFCD00081849 Boiling Point: 30-60 C(lit.); 35-60 C Density: 0.64 g/mL at 25 C(lit.) Refractive Index: n20/D 1.363(lit.) EC Number: 232-453-7 UNSPSC Code: 12190000 General description: Petroleum ether is a mixture of low boiling aliphatic hydrocarbons (mainly hexane and pentane) that is generally used as a laboratory solvent. General description: Petroleum ether is a colorless liquid. Extracts of leaves of Litchi chinensis Gaertn. (Sapindaceae) have been prepared in petroleum ether and were evaluated for antiinflammatory, analgesic and antipyretic activities. Pentanes and hexanes are the major constituents of petroleum ether. Application: Petroleum ether has been used for the analysis of total dietary fiber content by employing a total dietary fibre assay kit. It may be used in the absorption chromatographic purification of organic compounds.
Potassium Ferricyanide, 99%+, ACS 500g
Item #:
SIG/244023-500G
Supplier #: 244023-500G
Supplier #: 244023-500G
SIGMA-ALDRICH CORPORATION Part No. 244023-500G
Synonyms: Potassium ferricyanide; Red prussiate Formula: K3Fe(CN)6 Formula Weight: 329.24
CAS No.: 13746-66-2 Purity: ≥99.0% Supplemental Hazard Statements: Contact with acids liberates very toxic gas. Packaging: 100, 500 g in poly bottle Packaging: 12 kg in fiber drum Packaging: 5 g in glass bottle
Synonyms: Potassium ferricyanide; Red prussiate Formula: K3Fe(CN)6 Formula Weight: 329.24
CAS No.: 13746-66-2 Purity: ≥99.0% Supplemental Hazard Statements: Contact with acids liberates very toxic gas. Packaging: 100, 500 g in poly bottle Packaging: 12 kg in fiber drum Packaging: 5 g in glass bottle
Potassium Citrate Tribasic Monohydrate
Item #:
SIG/C8385-1KG
Supplier #: C8385-1KG
Supplier #: C8385-1KG
SIGMA-ALDRICH CORPORATION Part No. C8385-1KG
Formula: C6H5K3O7 + H2O Formula Weight: 324.41
CAS No.: 6100-05-6 Purity: ≥98% (GC/titration) Packaging: 1 kg in poly bottle Packaging: 500 g in poly bottle
Formula: C6H5K3O7 + H2O Formula Weight: 324.41
CAS No.: 6100-05-6 Purity: ≥98% (GC/titration) Packaging: 1 kg in poly bottle Packaging: 500 g in poly bottle
2-Propanol ACS reagent 99.5% 200L
Item #:
SIG/190764-200L
Supplier #: 190764-200L
Supplier #: 190764-200L
SIGMA-ALDRICH CORPORATION Part No. 190764-200L
Synonyms: sec -Propyl alcohol; IPA; Isopropanol; Isopropyl alcohol Formula: (CH3)2CHOH Formula Weight: 60.10
CAS No.: 67-63-0 Purity: ≥99.5% Density: 0.785 g/mL at 25 °C(lit.) Packaging: 1, 6 x 1, 2, 2.5, 4, 4 x 4 L in glass bottle Packaging: 20, 200 L in steel drum Packaging: 4 x 4 L in poly bottle Packaging: 500, 6 x 500 mL in glass bottle
Synonyms: sec -Propyl alcohol; IPA; Isopropanol; Isopropyl alcohol Formula: (CH3)2CHOH Formula Weight: 60.10
CAS No.: 67-63-0 Purity: ≥99.5% Density: 0.785 g/mL at 25 °C(lit.) Packaging: 1, 6 x 1, 2, 2.5, 4, 4 x 4 L in glass bottle Packaging: 20, 200 L in steel drum Packaging: 4 x 4 L in poly bottle Packaging: 500, 6 x 500 mL in glass bottle
Petroleum Ether ACS-(Diethyl ether) 4L
Item #:
SIG/676845-4L
Supplier #: 676845-4L
Supplier #: 676845-4L
SIGMA-ALDRICH CORPORATION Part No. 676845-4L
Synonyms: Ether; Ethyl ether Formula: (CH3CH2)2O Formula Weight: 74.12
CAS No.: 60-29-7 Purity: ≥98.0% Density: 0.706 g/mL at 25 ÝC(lit.) Supplemental Hazard Statements: May form explosive peroxides., Repeated exposure may cause skin dryness or cracking. Packaging: 1, 4, 4 x 4 L in aluminum bottle
Synonyms: Ether; Ethyl ether Formula: (CH3CH2)2O Formula Weight: 74.12
CAS No.: 60-29-7 Purity: ≥98.0% Density: 0.706 g/mL at 25 ÝC(lit.) Supplemental Hazard Statements: May form explosive peroxides., Repeated exposure may cause skin dryness or cracking. Packaging: 1, 4, 4 x 4 L in aluminum bottle
Petroleum Ether BP 30-40C 2.5L
Item #:
SIG/77399-2.5L
Supplier #: 77399-2.5L
Supplier #: 77399-2.5L
SIGMA-ALDRICH CORPORATION Part No. 77399-2.5L
Synonyms: Petroleum benzin
CAS No.: 101316-46-5 Density: 0.63 g/mL at 20 ÝC
Synonyms: Petroleum benzin
CAS No.: 101316-46-5 Density: 0.63 g/mL at 20 ÝC
Pepsin from Porcine Gastric Mucosa 500g
Item #:
SIG/P7125-500G
Supplier #: P7125-500G
Supplier #: P7125-500G
SIGMA-ALDRICH CORPORATION Part No. P7125-500G
Synonym: Pepsin A, Pepsin from hog stomach CAS Number: 9001-75-6 EC Number: 232-629-3 Enzyme Commission (EC) Number: 3.4.23.1 MDL Number: MFCD00081840 Analysis Note Optimum pH is 2-4. Active in 4 M urea and 3 M guanidine HCl. Stable at 60 ÝC. Pepsin is irreversibly inactivated at pH 8.0 - 8.5. Protein determined by E1%/280 Application Used to produce F(ab')2 fragments of antibodies. Pepsin is a peptidase used to digest proteins and is commonly used in the preparation of Fab fragments from antibodies. Pepsin, from porcine gastric mucosa, has been used to hydrolyze dry cervical samples in mice. Product P7125 is provided in powder form. Product P7125 has been used to denature DNA from kidney cells 1 and to digest pathology samples from anal canal carcinomas (ACC) biopsies prior to EGFR staining 2 . Unit Definition One unit will produce a ?A 280 of 0.001 per min at pH 2.0 at 37 ÝC, measured as TCA-soluble products using hemoglobin as substrate. (Final volume = 16 mL. Light path = 1 cm.) Biochem/physiol Actions Pepsin hydrolyzes peptide bonds, not amide or ester linkages. Pepsin cleaves peptides with an aromatic acid on either side of the peptide bond. Sulfur-containing amino acids increase susceptibility to hydrolysis when they are close to the peptide bond. Pepsin preferentially cleaves at the carboxyl side of phenylalanine and leucine and at the carboxyl side of glutamic acid residues. Cleaves Phe-Val, Gln-His, Glu-Ala, Ala-Leu, Leu-Tyr, Tyr-Leu, Gly-Phe, Phe-Phe and Phe-Tyr bonds in the _ chain of insulin. Pepsin is the major proteolytic enzyme produced in the stomach. It digests proteins through the cleavage of interior peptide linkages. 3 Preferential cleavage: hydrophobic and aromatic residues in P1 and P1' postitions. Cleaves Phe-Val, Gln-His, Glu-Ala, Ala-Leu, Leu-Tyr, Tyr-Leu, Gly-Phe, Phe-Phe and Phe-Tyr bonds in the _ chain of insulin. Pepsin is the major proteolytic enzyme produced in the stomach. It digests proteins through the cleavage of interior peptide linkages. 3
Synonym: Pepsin A, Pepsin from hog stomach CAS Number: 9001-75-6 EC Number: 232-629-3 Enzyme Commission (EC) Number: 3.4.23.1 MDL Number: MFCD00081840 Analysis Note Optimum pH is 2-4. Active in 4 M urea and 3 M guanidine HCl. Stable at 60 ÝC. Pepsin is irreversibly inactivated at pH 8.0 - 8.5. Protein determined by E1%/280 Application Used to produce F(ab')2 fragments of antibodies. Pepsin is a peptidase used to digest proteins and is commonly used in the preparation of Fab fragments from antibodies. Pepsin, from porcine gastric mucosa, has been used to hydrolyze dry cervical samples in mice. Product P7125 is provided in powder form. Product P7125 has been used to denature DNA from kidney cells 1 and to digest pathology samples from anal canal carcinomas (ACC) biopsies prior to EGFR staining 2 . Unit Definition One unit will produce a ?A 280 of 0.001 per min at pH 2.0 at 37 ÝC, measured as TCA-soluble products using hemoglobin as substrate. (Final volume = 16 mL. Light path = 1 cm.) Biochem/physiol Actions Pepsin hydrolyzes peptide bonds, not amide or ester linkages. Pepsin cleaves peptides with an aromatic acid on either side of the peptide bond. Sulfur-containing amino acids increase susceptibility to hydrolysis when they are close to the peptide bond. Pepsin preferentially cleaves at the carboxyl side of phenylalanine and leucine and at the carboxyl side of glutamic acid residues. Cleaves Phe-Val, Gln-His, Glu-Ala, Ala-Leu, Leu-Tyr, Tyr-Leu, Gly-Phe, Phe-Phe and Phe-Tyr bonds in the _ chain of insulin. Pepsin is the major proteolytic enzyme produced in the stomach. It digests proteins through the cleavage of interior peptide linkages. 3 Preferential cleavage: hydrophobic and aromatic residues in P1 and P1' postitions. Cleaves Phe-Val, Gln-His, Glu-Ala, Ala-Leu, Leu-Tyr, Tyr-Leu, Gly-Phe, Phe-Phe and Phe-Tyr bonds in the _ chain of insulin. Pepsin is the major proteolytic enzyme produced in the stomach. It digests proteins through the cleavage of interior peptide linkages. 3