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 N-Hydroxy-5-Norbornene-2,3-Dicarboximide (HONB) (CAS: 21715-90-2) 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 HONB, Please contact: alvin@ruifuchem.comDescription:
Package/Storage/Shipping:
| Chemical Name | N-Hydroxy-5-Norbornene-2,3-Dicarboximide |
| Synonyms | HONB; N-Hydroxy-5-Norbornene-2.3-Dicarboxylic imide; N-Hydroxybicyclo[2.2.1]hept-5-ene-2,3-Dicarboxylic Acid imide; N-Hydroxy-5-Norbornene-2,3-Dicarboxylic acid imide; 2-Hydroxy-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione |
| Stock Status | In Stock, Mass Production |
| CAS Number | 21715-90-2 |
| Molecular Formula | C9H9NO3 |
| Molecular Weight | 179.18 g/mol |
| Melting Point | 164.0~170.0℃(lit.) |
| Density | 1.574 |
| Solubility in Water | 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 | 164.0~170.0℃ | 164.0~166.0℃ |
| Water by Karl Fischer | <0.50% | 0.26% |
| Sulfate | <1.00% | 0.7% |
| Chloride | <0.10% | 0.08% |
| Purity / Analysis Method | >98.0% (HPLC) | 99.1% |
| Infrared Spectrum | Conforms to Structure | Complies |
| 1 H NMR Spectrum | Conforms to Structure | Complies |
| Solubility in EtOH | Clear, 50mg/ml | Pass |
| Conclusion | The product has been tested & complies with the given specifications | |
21715-90-2 - Risk and Safety:
Application:
Hazard Symbols Xi - Irritant Risk Codes 36/37/38 - Irritating to eyes, respiratory system and skin. Safety Description S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. WGK Germany 3 TSCA YesN-Hydroxy-5-Norbornene-2,3-Dicarboximide (HONB) (CAS: 21715-90-2) is used in solution-phase peptide synthesis. Used in the synthesis of enkephalin analogs. HONB has been reported that its effect is better than N-Hydroxysuccinimide (HOSu,NHS). In peptide synthesis, it is an effective reagent for connecting with DCC. HONB decreases racemization in peptide synthesis and inhibits formation of N-acylureas. Generation, and obtain a high-yield peptide; the corresponding chloroformate can be used to introduce different types of amino protecting groups.