---
kind: "section"
citation: "40 C.F.R. § 174.521"
title: "40"
number: "174.521"
heading: "Neomycin phosphotransferase II; exemption from the requirement of a tolerance."
url: "https://uscodex.org/cfr/40/174.521"
---

# §174.521. Neomycin phosphotransferase II; exemption from the requirement of a tolerance.


Residues of the neomycin phosphotransferase II (NPTII) enzyme are exempted from the requirement of a tolerance in all food commodities when used as a plant-incorporated protectant inert ingredient.


## Notes

### Amendments

[72 FR 20435, Apr. 25, 2007]

### Authority

Authority: 7 U.S.C. 136-136y; 21 U.S.C. 321(q), 346a and 371.

### Source

Source: 66 FR 37814, July 19, 2001, unless otherwise noted.

### Amendments

[72 FR 20435, Apr. 25, 2007]