---
kind: "unit"
title: "21"
title_heading: "Food and Drugs"
key: "chI/subchE/part526"
level: "part"
label: "Part 526"
heading: "Intramammary Dosage Form New Animal Drugs"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/21/chI-subchE-part526"
sections_count: 13
---

# Part 526 — Intramammary Dosage Form New Animal Drugs

Title 21 C.F.R. — Food and Drugs › Chapter I — Food and Drug Administration, Department of Health and Human Services › Subchapter E — Animal Drugs, Feeds, and Related Products

## Sections

- [§526.88. Amoxicillin.](/cfr/21/526.88.md)
- [§526.313. Ceftiofur.](/cfr/21/526.313.md)
- [§526.363. Cephapirin benzathine.](/cfr/21/526.363.md)
- [§526.365. Cephapirin sodium.](/cfr/21/526.365.md)
- [§526.464. Cloxacillin benzathine.](/cfr/21/526.464.md)
- [§526.465. Cloxacillin sodium.](/cfr/21/526.465.md)
- [§526.820. Erythromycin.](/cfr/21/526.820.md)
- [§526.1130. Hetacillin.](/cfr/21/526.1130.md)
- [§526.1590. Novobiocin.](/cfr/21/526.1590.md)
- [§526.1696. Penicillin G procaine.](/cfr/21/526.1696.md)
- [§526.1697. Penicillin G procaine and dihydrostreptomycin.](/cfr/21/526.1697.md)
- [§526.1698. Penicillin G procaine and novobiocin.](/cfr/21/526.1698.md)
- [§526.1810. Pirlimycin.](/cfr/21/526.1810.md)