Manufacturer Supply Linagliptin and Related Intermediates:
Linagliptin CAS 668270-12-0
Linagliptin Parent Nucleus Intermediate CAS 853029-57-9
8-Bromo-3-Methylxanthine CAS 93703-24-3
8-Bromo-7-(2-butyn-1-yl)-3-methylxanthine CAS 666816-98-4
2-(Chloromethyl)-4-Methylquinazoline CAS 109113-72-6
(R)-3-(Boc-Amino)piperidine CAS 309956-78-3
(R)-(-)-3-Aminopiperidine Dihydrochloride CAS 334618-23-4
1-Bromo-2-Butyne CAS 3355-28-0
| Chemical Name | 1-Bromo-2-Butyne |
| Synonyms | 2-Butynyl Bromide |
| CAS Number | 3355-28-0 |
| CAT Number | RF-PI500 |
| Stock Status | In Stock, Production Scale Up to Tons |
| Molecular Formula | C4H5Br |
| Molecular Weight | 132.99 |
| Boiling Point | 40.0~41.0℃/20 mmHg (lit.) |
| Density | 1.519 g/ml at 25℃ (lit.) |
| Refractive Index | n20/D 1.508(lit.) |
| Brand | Ruifu Chemical |
| Item | Specifications |
| Appearance | Colorless to Slight Yellow Liquid |
| Purity / Analysis Method | ≥99.0% (GC) |
| Moisture (K.F) | ≤0.20% |
| Residue on Ignition | ≤0.10% |
| Single Impurity | ≤0.30% |
| Total Impurities | ≤1.0% |
| Remarks | The color will get darker after exposed to air frequently |
| Store in low-temperature, dark, dry and nitrogen-protected place | |
| Use it out as soon as possible after opening | |
| Test Standard | Enterprise Standard |
| Usage | Pharmaceutical Intermediates |
Package: Bottle, 25kg/Barrel or 220kg Plastic drum, or according to customer's requirement.
Storage Condition: Store in sealed containers at cool and dry place; Protect from light and moisture.
1-Bromo-2-Butyne (CAS: 3355-28-0) is widely used in organic synthesis, synthesis of pharmaceutical intermediates and Active Pharmaceutical Ingredient (API) synthesis. 1-Bromo-2-Butyne is a key intermediate in the synthesis of Linagliptin (CAS: 668270-12-0) for the treatment of adults with type 2 diabetes mellitus. 1-Bromo-2-Butyne is a chemical whic his exploited in the synthesis of axially chiral teranyl compounds, alkylation of L-tryptophan methyl ester, 4-butynyloxybenzene sulfonyl chloride and mono-propargylated diene derivative. In addition to this, it is also used in the synthesis of isopropylbut-2-ynylamine, allenylcyclobutanol derivatives, allyl-[4-(but-2-ynyloxy)phenyl]sulfane, allenylindium and axially chiral teranyl compounds.