Veterinary MedicineChina Veterinary Medicine Animal Pharmaceutical Raw Material CAS 17316-67-5 99% Pure Vitamin B12 Butaphosphan/Butafosfan, Find details about China Butafosfan, CAS 17316-67-5 from Veterinary Medicine Animal Pharmaceutical Raw Material CAS 17316-67-5 99% Pure Vitamin B12 Butaphosphan/Butafosfan