Thioflavine S
硫磺素S
Also known as: Direct Yellow 7, C.I. Direct Yellow 7, CI NO 49010, Thioflavin S, Vasoflavine
Thioflavine S (CAS 1326-12-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C17H19ClN2S and a molecular weight of 318.864 g/mol. It is also known as Direct Yellow 7, C.I. Direct Yellow 7 and CI NO 49010. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1326-12-1
- Jingsj CID
- J-50490-8
- Molecular Formula
- C17H19ClN2S
- Chinese Name
- 硫磺素S
- Molecular Weight
- 318.864 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Exact Mass | 318.095734 |
|---|
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. McLellan ME, et al. In vivo imaging of reactive oxygen species specifically associated with thioflavine S-positive amyloid plaques by multiphoton microscopy. J Neurosci. 2003 Mar 15;23(6):2212-7. |
|---|
Frequently Asked Questions
What is the CAS number of Thioflavine S?
The CAS number of Thioflavine S is 1326-12-1.
What are the molecular formula and molecular weight of Thioflavine S?
Thioflavine S has molecular formula C17H19ClN2S and molecular weight 318.864 g/mol.
Is Thioflavine S hazardous?
Thioflavine S has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Thioflavine S (CAS 1326-12-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-50490-8 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.