Chemical identity

Dacarbazine EP Impurity A/ Hypoxanthine 2-Aza Impuirty/ Temozolomide EP Impurity E/ Dacarbazine Related Compound B/ 2-Azahypoxanthine (Free Base)

CAS 4656-86-4 · C4H3N5O

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-11807
PubChem CID135421876
NameDacarbazine EP Impurity A/ Hypoxanthine 2-Aza Impuirty/ Temozolomide EP Impurity E/ Dacarbazine Related Compound B/ 2-Azahypoxanthine (Free Base)
CAS RN4656-86-4
Molecular formulaC4H3N5O
Molecular weight137.1 g/mol
IUPAC name3,7-Dihydro-4H-imidazo[4,5-d]-1,2,3-triazin-4-one
InChIKeyBTERLCQQBYXVIN-UHFFFAOYSA-N

02Structure identifiers

2D structurePubChem CID 135421876
Two-dimensional chemical structure of Dacarbazine EP Impurity A/ Hypoxanthine 2-Aza Impuirty/ Temozolomide EP Impurity E/ Dacarbazine Related Compound B/ 2-Azahypoxanthine (Free Base), CAS 4656-86-4
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 2 rings, includes aromatic atoms. These statements are calculated from the published structure string.

Defined stereocentres0
Unassigned stereocentres0
Ring count2
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC1=NC2=C(N1)C(=O)NN=N2
InChINot listed
Formula from structureC4H3N5O
Molecular weight from structure137.1 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 / RCSNO EXACT MATCH FOUNDCAS 4656-86-4 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 4656-86-4 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

04Names and relationships

Associated parent compound

Dacarbazine; Temozolomide

View API and impurity family

Other names

  • Dacarbazine EP Impurity A
  • Hypoxanthine 2-Aza Impuirty / Temozolomide EP Impurity E / Dacarbazine Related Compound B / 2-Azahypoxanthine (Free Base)
  • 3,7-Dihydro-4H-imidazo(4,5-d)-1,2,3-triazin-4-one
  • 2-Azahypoxanthine
  • 4656-86-4
  • 3,5-dihydroimidazo[4,5-d]triazin-4-one
  • TGZ8A8PWEX
  • NSC-22419
  • RefChem:85514
  • 225-096-3
  • 829-980-5
  • 1,5-dihydro-4H-imidazo[4,5-d]-1,2,3-triazin-4-one

Related records from the same parent family

05Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

06Sources