3-Tert-Butyl-2-Methoxypyrazine

Also known as: 2-sec-Butyl-3-methoxypyrazine, Pyrazine, 2-methoxy-3-(1-methylpropyl)-, 2-Methoxy-3-(1-methylpropyl)pyrazine, EINECS 246-050-9, FEMA No. 3433 (+3 more)

INCI: 3-TERT-BUTYL-2-METHOXYPYRAZINE

3-Tert-Butyl-2-Methoxypyrazine (CAS 24168-70-5) is a cosmetic cosmetic ingredient functioning as Fragrance with extremely potent green bell pepper aroma and ultra-low odor. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.

View industrial chemical safety profile for CAS 24168-70-5 →

Auto-generated CPSR Part A draft with source citations
Function
Fragrance with extremely potent green bell pepper aroma and ultra-low odor threshold of 1-2 ppt in water
Safety Rating
GOOD

Chemistry & Identifiers

Formula
C9H14N2O
MW
166.22 g/mol
PubChem CID
520098
IUPAC Name
2-butan-2-yl-3-methoxypyrazine
InChIKey
QMQDJVIJVPEQHE-UHFFFAOYSA-N

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes Permitted — FEMA GRAS; no specific FDA cosmetic restriction

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for 3-Tert-Butyl-2-Methoxypyrazine.

Calculate MoS for your specific formulation with the MoS Calculator.

PubChem Annotations

Safety and regulatory annotations from PubChem (NCBI) aggregated sources.

Regulatory (4)
JECFA Number
791
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
JECFA Evaluation
2-sec-BUTYL-3-METHOXYPYRAZINE | 2001 | No safety concern at current levels of intake when used as a flavouring agent | TRS 909-JECFA 57/51 | FAS 48-JECFA 57/135
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
JECFA Evaluation
2-METHOXY-3-sec-BUTYLPYRAZINE | 2001 | No safety concern at current levels of intake when used as a flavouring agent | TRS 909-JECFA 57/51 | FAS 48-JECFA 57/135
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
JECFA Evaluation
2-METHOXY-3-(1-METHYLPROPYL)PYRAZINE | 2001 | No safety concern at current levels of intake when used as a flavouring agent | TRS 909-JECFA 57/51 | FAS 48-JECFA 57/135
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Flavouring and nutrient Fragrance
Regulatory List Membership (3)
IFRA Fragrance Transparency List FDA Substances Added to Food (EAFUS) Consumer Product Chemical

Expert Verdict

Expert safety assessment and concern-level summary for 3-Tert-Butyl-2-Methoxypyrazine.

Regulatory Flags

fragrance-component ifra_fragrance fda_food_additive

Known Synonyms

2-sec-Butyl-3-methoxypyrazine Pyrazine, 2-methoxy-3-(1-methylpropyl)- 2-Methoxy-3-(1-methylpropyl)pyrazine EINECS 246-050-9 FEMA No. 3433 2-Methoxy-3-sec-butylpyrazine Pyrazine, 2-sec-butyl-3-methoxy- UNII-62UR370ONE

Chemical Function

Fragrance Flavouring and nutrient

Regulatory Lists

Europe IFRA Transparency food_additive; Substances Added to Food (formerly EAFUS) (2/2019) consumer_product

Australian Status

AICIS status: listed

Cross-Vertical Safety Context

Same-CAS public records found in pharmaceutical data.

SOURCE ChEMBL / DrugCentral / FAERS DB_PHARMA CAS match

Pharmaceutical Data

Same-CAS rows from the pharmaceutical spoke database.

ChEMBL ID
CHEMBL94514
View full pharmaceutical profile →

Frequently Asked Questions

Is 3-Tert-Butyl-2-Methoxypyrazine safe in cosmetics?

3-Tert-Butyl-2-Methoxypyrazine has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.

Is 3-Tert-Butyl-2-Methoxypyrazine allowed in the EU?

3-Tert-Butyl-2-Methoxypyrazine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does 3-Tert-Butyl-2-Methoxypyrazine do in cosmetics?

3-Tert-Butyl-2-Methoxypyrazine functions as: Fragrance with extremely potent green bell pepper aroma and ultra-low odor threshold of 1-2 ppt in water. It is classified as a cosmetic ingredient in our database. CAS number: 24168-70-5.

Is 3-Tert-Butyl-2-Methoxypyrazine used outside cosmetics?

3-Tert-Butyl-2-Methoxypyrazine also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

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