Chemical identity
PBT Cyclic Trimer / Cyclotris(1,4-butylene terephthalate)
CAS 63440-94-8 · C36H36O12
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-24781 |
|---|---|
| PubChem CID | 22186544 |
| Name | PBT Cyclic Trimer / Cyclotris(1,4-butylene terephthalate) |
| CAS RN | 63440-94-8 |
| Molecular formula | C36H36O12 |
| Molecular weight | 660.66 g/mol |
| IUPAC name | 3,8,15,20,27,32-Hexaoxatetracyclo[32.2.2.210,13.222,25]dotetraconta-10,12,22,24,34,36,37,39,41-nonaene-2,9,14,21,26,33-hexone |
| InChIKey | HRNLXZWSSMMFMP-UHFFFAOYSA-N |
02Structure identifiers

The parsed structure contains 7 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.
| Defined stereocentres | 0 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 7 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C1CCOC(=O)C2=CC=C(C=C2)C(=O)OCCCCOC(=O)C3=CC=C(C=C3)C(=O)OCCCCOC(=O)C4=CC=C(C=C4)C(=O)OC1 |
|---|---|
| InChI | Not listed |
| Formula from structure | C36H36O12 |
| Molecular weight from structure | 660.66 g/mol |
03India status for this compound
These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.
| NDPS / RCS | NO EXACT MATCH FOUND | CAS 63440-94-8 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 63440-94-8 has no exact match in the reviewed SCOMET list. |
| Review date | 2026-08-01 | Recheck the current official instruments for the material, concentration, activity and date in question. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · reviewed 2026-08-01
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · reviewed 2026-08-01
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · reviewed 2026-08-01
04Names and relationships
Associated parent compound
Pharacine
View API and impurity familyOther names
- PBT Cyclic Trimer
- Cyclotris(1, 4-butylene terephthalate)
- 33-hexone
- 3,8,15,20,27,32-Hexaoxatetracyclo[32.2.2.210,13.222,25]dotetraconta-1(36),10,11,13(12),22,23,25(24),34,37-nonaene-2,9,14,21,26,33-hexone
- 3,8,15,20,27,32-Hexaoxatetracyclo[32.2.2.2^{10,13}.2^{22,25}]dotetraconta-1(36),10,12,22,24,34,37,39,41-nonaene-2,9,14,21,26,33-hexone
- RefChem:487764
- 862-627-3
- 63440-94-8
- 3,8,15,20,27,32-Hexaoxatetracyclo[32.2.2.210,13.222,25]dotetraconta-1(37),10,12,22(40),23,25(39),34(38),35,41-nonaene-2,9,14,21,26,33-hexone
- 3,8,15,20,27,32-Hexaoxatetracyclo[32.2.2.210,13.222,25]dotetraconta-10,12,22,24,34,36,37,39,41-nonaene-2,9,14,21,26,33-hexone
- Pharacine Impurity 2
- AB8N9A9YSY
05Documented history
Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.
No verified discovery, first report, occurrence, use or issue event is currently available for this identity.
06Sources
- S01PubChem compound record, CID 22186544
Names and machine-readable chemical identity properties.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. This page does not reproduce vendor descriptions or contributed narrative text.
- S03Narcotic Drugs and Psychotropic Substances Act, 1985, Schedule
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S04Controlled-substances notifications and amendments
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S05Appendix 3, SCOMET List
Directorate General of Foreign Trade, Government of India. Used for the exact-compound India status shown on this page.
