cefotiam

CHEBI:355510 ·resolve ·ANTIBACTERIAL ·EXACT SEEDED

A cephalosporin with ({1-[2-(dimethylamino)ethyl]-1H-tetrazol-5-yl}sulfanyl)methyl and (2-amino-1,3-thiazol-4-yl)acetamido substituents at positions 3 and 7, respectively, of the cephem skeleton. A third generation beta-lactam cephalosporin antibiotic, it is active against a broad spectrum of both Gram positive and Gram negative bacteria. — ChEBI

Machine-generated and unreviewed. Identity, structure and cross-references come straight from ChEBI's and CARD's own data; no curator has signed off on this record yet.

Classification

cephalosporinARO:0000032

Strictly broader compounds or drug classes this molecule belongs to.

CHEBI:23066 CHEBI:23066
CHEBI:72588 CHEBI:72588
CHEBI:88225 CHEBI:88225
ARO:0000032 ARO:0000032

Chemical structure

Computed structure properties
Molecular formula	C18H23N9O4S3
Charge	0
Average mass	525.642 Da
Monoisotopic mass	525.10351 Da
Source	ChEBI
InChIKey	QYQDKDWGWDOFFU-IUODEOHRSA-N

SMILES

[H][C@]12SCC(CSc3nnnn3CCN(C)C)=C(C(=O)O)N1C(=O)[C@@]2([H])NC(=O)Cc1csc(N)n1

InChI

InChI=1S/C18H23N9O4S3/c1-25(2)3-4-26-18(22-23-24-26)34-7-9-6-32-15-12(14(29)27(15)13(9)16(30)31)21-11(28)5-10-8-33-17(19)20-10/h8,12,15H,3-7H2,1-2H3,(H2,19,20)(H,21,28)(H,30,31)/t12-,15-/m1/s1

Also called

cefotiamum (INN)— chebi
(6R,7R)-7-{[(2-amino-1,3-thiazol-4-yl)acetyl]amino}-3-[({1-[2-(dimethylamino)ethyl]-1H-tetrazol-5-yl}sulfanyl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (EXACT_SYNONYM)— chebi
7β-(2-amino-1,3-thiazol-4-yl)acetamido-3-[({1-[2-(dimethylamino)ethyl]-1H-tetrazol-5-yl}sulfanyl)methyl]-3,4-didehydrocepham-4-carboxylic acid (EXACT_SYNONYM)— chebi
(6R,7R)-7-[2-(2-Amino-thiazol-4-yl)-acetylamino]-3-[1-(2-dimethylamino-ethyl)-1H-tetrazol-5-ylsulfanylmethyl]-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid (EXACT_SYNONYM)— chebi
CEFOTIAM (EXACT_SYNONYM)— chebi
CTM (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

ARO:3000643
cas:61622-34-2
drugbank:DB00229
drugcentral:548
kegg.drug:D07648
lincs.smallmolecule:LSM-2022
patent:DE2458695
patent:US4080498
wikipedia.en:Cefotiam
chembl:CHEMBL1296
pubchem.compound:43708

Activity roles

Every antimicrobial role a source asserts for this compound — the unreduced evidence behind its antimicrobial_class.

CHEBI:33281 CHEBI:33281
CHEBI:36047 CHEBI:36047

Source concepts

Every upstream concept that resolved to this record. The merge is the product: this is what shows ChEBI and CARD are describing the same structure.

Upstream concepts merged into this record
Source	Native ID	Label	Minted CURIE	Version
ARO	`ARO:3000643`	cefotiam	`antibioticmech:aro-dbe61f6e87`	2026-08-30
CHEBI	`CHEBI:355510`	cefotiam	`antibioticmech:chebi-40af7c46ef`	2026-08-30

Molecular targets

The molecular entity or process this compound acts on. Each target carries evidence — this is a mechanistic claim, not a classification.

beta-lactam sensitive penicillin-binding protein PROTEIN DIRECT_BINDING_TARGET

ARO:3000749

CARD/ARO database assertion; target organism, strain, and assay are not specified. Penicillin-binding proteins are asserted as inhibited transpeptidases. Evidence status: PRIMARY_EVIDENCE_NEEDED. Source: CARD_ARO 2026-08-30 (retrieved 2026-08-30).

ARO:3000749 (CARD/ARO asserts targeted_by_antibiotic ARO:3000643 (cefotiam); database assertion, not a primary citation.)

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (ARO, CHEBI)
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-31 · seed_from_sources
Re-seeded from updated data/raw/ inventories

Provenance

Seeded by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record.