Other numbers: ATCC 9637, CCUG 1640, CIP 2.83, CNCTC Ec 302/62, DSM 1116, IFO 13500, LMD 50.28, LMG 11080, NCIMB 8666, NRRL B-766, strain W. History: < BÚ ÈSAV < P. Hauduroy. Additional information: Antibiotic assay (6287). Production of cephalosporins by conversion. Biohazard group 2. Deacylation of benzyl- and phenoxymethyl penicillin tetrazoles. Cultivation conditions: Medium 71, 37°C.