21840-67-5
21840-67-5 structure
- Name: 2-Butyne-1,4-diol,1,4-bis(N-phenylcarbamate)
- Chemical Name: 4-(phenylcarbamoyloxy)but-2-ynyl N-phenylcarbamate
- CAS Number: 21840-67-5
- Molecular Formula: C18H16N2O4
- Molecular Weight: 324.33100
- Create Date: 2017-11-07 01:14:05
- Modify Date: 2025-08-25 19:01:06
| Name | 4-(phenylcarbamoyloxy)but-2-ynyl N-phenylcarbamate |
|---|---|
| Synonyms |
1,4-bis-phenylcarbamoyloxy-but-2-yne
but-2-yne-1,4-diyl bis(phenylcarbamate) 1,4-Bis-phenylcarbamoyloxy-but-2-in |
| Density | 1.32g/cm3 |
|---|---|
| Boiling Point | 427.1ºC at 760mmHg |
| Molecular Formula | C18H16N2O4 |
| Molecular Weight | 324.33100 |
| Flash Point | 212.1ºC |
| Exact Mass | 324.11100 |
| PSA | 76.66000 |
| LogP | 3.63320 |
| Vapour Pressure | 1.68E-07mmHg at 25°C |
| Index of Refraction | 1.651 |
| HS Code | 2924299090 |
|---|
|
~97%
21840-67-5 |
| Literature: Ramesh; Chandrasekaran Organic Letters, 2005 , vol. 7, # 22 p. 4947 - 4950 |
|
~%
21840-67-5 |
| Literature: Horino, Yoshikazu; Kimura, Masanari; Tanaka, Shuji; Okajima, Toshiya; Tamaru, Yoshinao Chemistry - A European Journal, 2003 , vol. 9, # 11 p. 2419 - 2438 |
| Precursor 3 | |
|---|---|
| DownStream 0 | |
| HS Code | 2924299090 |
|---|---|
| Summary | 2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |