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Methyl (S)-(-)-2-isocyanato-3-methylbutyrate

Also known as: Methyl (S)-2-isocyanato-3-methylbutanoate, Methyl (S)-(-)-2-isocyanatoisovalerate, (S)-(-)-methyl 2-isocyanato-3-methylbutanoate, Methyl N-(oxomethylene)valinate, L-valine methyl ester isocyanate, Methyl (S)-(-)-2-isocyanato-3-methylbutyrate, Methyl (S)-(-)-2-isocyanato-3-methylbutyrate 99%, methyl N-(oxomethylene)-L-valinate, (2S)-2-isocyanato-3-methylbutanoic acid methyl ester, methyl-(S)-(-)-2-isocyanato-3-methylbutyrate, valine methyl ester isocyanate

Methyl (S)-(-)-2-isocyanato-3-methylbutyrate (CAS 30293-86-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H11NO3 and a molecular weight of 157.16700 g/mol. Key properties include a boiling point of 75ºC0.04 mm Hg(lit.), a density of 1.053 g/mL at 25ºC(lit.) and a flash point of 77.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
30293-86-8
Jingsj CID
J-8510-9
Molecular Formula
C7H11NO3
Molecular Weight
157.16700 g/mol
Category
Organic Acids
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point75ºC0.04 mm Hg(lit.)
Density1.053 g/mL at 25ºC(lit.)
Flash Point77.8 °C
Exact Mass157.07400
PSA55.73000
LogP0.51980
Refractive Indexn20/D 1.428(lit.)

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H332 — Harmful if inhaled
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2929109000
Summary2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Methyl (S)-(-)-2-isocyanato-3-methylbutyrate?

The CAS number of Methyl (S)-(-)-2-isocyanato-3-methylbutyrate is 30293-86-8.

What are the molecular formula and molecular weight of Methyl (S)-(-)-2-isocyanato-3-methylbutyrate?

Methyl (S)-(-)-2-isocyanato-3-methylbutyrate has molecular formula C7H11NO3 and molecular weight 157.16700 g/mol.

Is Methyl (S)-(-)-2-isocyanato-3-methylbutyrate hazardous?

Methyl (S)-(-)-2-isocyanato-3-methylbutyrate has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H315 — Causes skin irritation.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Methyl (S)-(-)-2-isocyanato-3-methylbutyrate (CAS 30293-86-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8510-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.