- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: 3,4-Diaminothiophenedihydrochloride
- Price: Check
- Purity: 98.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: 3,4-Diaminothiophenedihydrochloride
- Price: ￥908.0/1g ￥1918.0/5g
- Purity: 97.0%
- Stocking Period: Inquiry
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: 3,4-Diaminothiophene dihydrochloride
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
90069-81-1
90069-81-1 structure
- Name: 3,4-Diaminothiophenedihydrochloride
- Chemical Name: 3,4-diaminothiophene dihydrochloride
- CAS Number: 90069-81-1
- Molecular Formula: C4H8Cl2N2S
- Molecular Weight: 187.091
- Catalog: Pharmaceutical intermediate Heterocyclic compound Thiophene compound
- Create Date: 2018-05-23 08:00:00
- Modify Date: 2025-08-20 13:08:35
| Name | 3,4-diaminothiophene dihydrochloride |
|---|---|
| Synonyms |
3,4-Diaminothiophene dihydrochloride
Thiophene-3,4-diamine dihydrochloride 3,4-Thiophenediamine dihydrochloride 3,4-Thiophenediamine, hydrochloride (1:2) MFCD00671511 3,4-Diaminothiophenedihydrochloride |
| Boiling Point | 385.5ºC at 760 mmHg |
|---|---|
| Melting Point | >150°C |
| Molecular Formula | C4H8Cl2N2S |
| Molecular Weight | 187.091 |
| Exact Mass | 185.978531 |
| PSA | 80.28000 |
| LogP | 3.67890 |
| Storage condition | 0-6°C |
| Symbol |
GHS05, GHS06 |
|---|---|
| Signal Word | Danger |
| Hazard Statements | H301-H317-H318 |
| Precautionary Statements | P280-P301 + P310-P305 + P351 + P338 |
| Hazard Codes | Xn: Harmful; |
| Risk Phrases | R20/21/22;R39 |
| Safety Phrases | S36/37-S60-S61-S26-S16-S9 |
| RIDADR | UN 1090 3/PG 2 |
| HS Code | 2934999090 |
|
~88%
90069-81-1 |
| Literature: Kuraray Co., Ltd.; Kondou, Yoshirou; Nakano, Kirihiro; Otake, Tomiaki Patent: US8519150 B2, 2013 ; Location in patent: Page/Page column 33 ; |
|
~%
90069-81-1 |
| Literature: Synthesis, , # 12 p. 1124 - 1126 |
| Precursor 2 | |
|---|---|
| DownStream 3 | |
![Thieno[3,4-b]pyrazine structure](https://image.chemsrc.com/caspic/319/272-43-5.png)
![2,3-dimethylthieno[3,4-b]pyrazine structure](https://image.chemsrc.com/caspic/277/78648-59-6.png)
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |