Why does CAS 97-99-4 appear in more than one EU cosmetic annex?

A substance identified by CAS 97-99-4 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts — for example, restricted under Annex III with specific conditions, while also appearing in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

How do I check if my formula contains a substance with CAS 97-99-4?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 97-99-4 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 97-99-4

Q: How do I use CAS 97-99-4 for compliance screening?

Cross-reference CAS 97-99-4 against your raw material specification sheets and CoA documents. When it appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met. All annex entries sharing this CAS number are listed on this page.

CAS 97-99-4 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 97-99-4

CAS 97-99-4PubChem CID 7360

Tetrahydrofurfuryl alcohol

Tetrahydrofurfuryl alcohol is a primary alcohol that is methanol in which one of the hydrogens of the methyl group has been replaced by a tetrahydrofuran-2-yl group. It has a role as a protic solvent. It is a primary alcohol and a member of oxolanes. — ChEBI

IUPAC name: oxolan-2-ylmethanol

Molecular formula: C5H10O2
Molecular weight: 102.13 g/mol
Exact mass: 102.068079557 Da
XLogP3: -0.1
Topological polar surface area: 29.5 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Tetrahydro-2-furanmethanolTHFATetrahydro-2-furanylmethanol2-Furanmethanol, tetrahydro-QO ThfaFurfuryl alcohol, tetrahydro-Tetrahydro-2-furancarbinolTetrahydrofuryl carbinol

16 more reported names

2-(Hydroxymethyl)tetrahydrofuranTetrahydro-2-furfuryl alcoholTetrahydrofurylalkoholTetrahydro-2-furylmethanolTetrahydrofurfurylalkoholFEMA No. 3056NSC-15434CHEBI:137944RefChem:897174202-625-6(Tetrahydrofuran-2-yl)methanoltetrahydro furfuryl alcohol(oxolan-2-yl)methanoltetrahydrofuran-2-ylmethanolTetrahydrofurylmethanolOxolan-2-methanol

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:137944
ChEMBL:CHEMBL2287521
EPA DTXSID:DTXSID1029128
PubMed:22755568
PubMed:22187253
PubMed:21887771
PubMed:21647802
PubMed:21589650
PubMed:21522719
PubMed:21202203
PubMed:21179291
PubMed:21104528
PubMed:20651922
PubMed:20533313
PubMed:20339589

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 97-99-4

1 total

Annex

Entry

1576

Tetrahydro-2-furylmethanol; tetrahydrofurfuryl alcohol

202-625-6

CMR

How CAS 97-99-4 is used on this site

CAS 97-99-4 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 97-99-4 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.

Frequently asked questions

A substance identified by CAS 97-99-4 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.

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