Chemical Properties:
Package: Bottle, Aluminium foil bag, 25kg/Cardboard Drum, or according to customer's requirement. Storage Condition: Store in sealed containers at cool and dry (2~8℃) warehouse away from incompatible substances. Protect from light and moisture. Shipping: Deliver to worldwide by FedEx / DHL Express. Provide fast and reliable delivery. Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer of 1-Hydroxy-7-Azabenzotriazole (HOAt) (CAS: 39968-33-7) with high quality. Ruifu Chemical supplys a series of protecting reagents and coupling reagents. Ruifu can provide worldwide delivery, competitive price, small and bulk quantities available. Purchase HOAt Please contact: alvin@ruifuchem.comDescription:
Package/Storage/Shipping:
| Chemical Name | 1-Hydroxy-7-Azabenzotriazole |
| Synonyms | HOAt; 3H-[1,2,3]-Triazolo[4,5-b]pyridin-3-ol; N-Hydroxy-7-Azobenzotriazole; 7-Aza-1-Hydroxybenzotriazole |
| Stock Status | In Stock, Commercial Scale |
| CAS Number | 39968-33-7 |
| Molecular Formula | C5H4N4O |
| Molecular Weight | 136.11 g/mol |
| Melting Point | 212.0~216.0℃ |
| Density | 0.973 g/mL at 20℃ |
| Refractive Index n20/D | 1.441 |
| Solubility in Hot NaOH | Almost Transparency |
| Storage Temp. | Cool & Dry Place (2~8℃) |
| COA & MSDS | Available |
| Category | Coupling Reagents |
| Brand | Ruifu Chemical |
Advantages:
How to Purchase? Please contact Dr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com 15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals. Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc. Advantages? Superior quality, affordable price, professional services and technical support, fast delivery. Quality Assurance? Strict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc. Samples? Most products provide free samples for quality evaluation, shipping cost should be paid by customers. Factory Audit? Factory audit welcome. Please make an appointment in advance. MOQ? No MOQ. Small order is acceptable. Delivery Time? If within stock, three days delivery guaranteed. Transportation? By Express (FedEx, DHL), by Air, by Sea. Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided. Custom Synthesis? Can provide custom synthesis services to best fit your research needs. Payment Terms? Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc.FAQ:
Stable Supply: Maintain reasonable stock
Professional Service: One stop purchasing service
Technical Support: Technology solution available
Custom Synthesis Service: Ranged from grams to kilos
Fast Delivery: If within stock, three days delivery guaranteed
High Quality: Established a complete quality assurance system
Sufficient Capacity: Sufficient facilities and technicians
OEM Package: Custom package and label available
Specifications:
| Items | Inspection Standards | Results |
| Appearance | White to Off-White Crystalline Powder | Complies |
| Melting Point | 212.0~216.0℃ | 213.0~214.0℃ |
| Loss on Drying | <0.50% | 0.10% |
| Purity / Analysis Method | >99.5% (HPLC) | 99.9% |
| Clarity of Solution | 0.3gram in 2 ml DMF Clear Solution | Complies |
| Infrared Spectrum | Consistent with Structure | Complies |
| 1 H NMR Spectrum | Consistent with Structure | Complies |
| Conclusion | The product has been tested & complies with the given specifications | |
39968-33-7 - Risk and Safety:
Application:
Risk Codes R61 - May cause harm to the unborn child R20/21 - Harmful by inhalation and in contact with skin. R36 - Irritating to the eyes R5 - Heating may cause an explosion R36/37/38 - Irritating to eyes, respiratory system and skin. R11 - Highly Flammable R41 - Risk of serious damage to eyes R37/38 - Irritating to respiratory system and skin. R22 - Harmful if swallowed R2 - Risk of explosion by shock, friction, fire or other sources of ignition R36/37 - Irritating to eyes and respiratory system. Safety Description S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S16 - Keep away from sources of ignition. S39 - Wear eye / face protection. S35 - This material and its container must be disposed of in a safe way. S36 - Wear suitable protective clothing. S36/37 - Wear suitable protective clothing and gloves. S28 - After contact with skin, wash immediately with plenty of soap-suds. S15 - Keep away from heat. UN IDs UN 1993 3/PG 3 WGK Germany 1 HS Code 2933990099 Hazard Class IRRITANT Packing Group Ⅱ1-Hydroxy-7-Azabenzotriazole (HOAt) (CAS: 39968-33-7) is a coupling reagent in peptide synthesis. HOAt efficiently speeds up coupling process and reduces the loss of chirality. Coupling activator for racemization-free coupling in peptide synthesis; An additive for peptide segment coupling in in reducing the extent of configurational loss at the reactive carboxylic acid residue. Inhibition of racemization in polypeptide condensation; also used for fragment condensation.