| ICInvagen Cipla Pilot Plant Unit V | Fall River | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IMIonic Materials | Woburn | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| IBIpsen Bioscience, INC. | Cambridge | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IPItw Polymer Sealants | Rockland | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| JCJana Care INC | Watertown | MA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| JSJoseph Selbeck and Robert Withee | Woburn | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| KBKaleido Biosciences | Bedford | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| KPKiniksa Pharmaceuticals CORP | Lexington | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| KTKitchen Techniques INC | Peabody | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| KDKohls Department Store 536 | Pembroke | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| LILabminds INC Boston Office | Boston | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LILaronde INC | Cambridge | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| LCLewis Chemical | Boston | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| LLiftlab | Waltham | MA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| LLLohxa, LLC | North Oxford | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LCLord CORP East Weymouth Ops | East Weymouth | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| LALubrizol Advanced Materials INC | Lawrence | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| MMa1 | Haverhill | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MPMace Polymers and Coating CO | Dudley | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| MSMacRae's Sustainable Goods, Inc | Marblehead | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| MCMarson Corporation | Chelsea | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MPMaxol Products CO INC | West Springfield | MA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| MEMayflower Enterprise | Whitman | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MMMayflower Medicinals October Hill | Holliston | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MIMbl International | Woburn | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| MCMD Chemicals LLC | Mendon | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MPMechanical Plastics INC | Agawam | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MModerna | Marlborough | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MModerna | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MBModerna Burlington | Burlington | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| MCModerna C/o of Alexandria Real Estate | Norwood | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MBMustang Bio INC | Worcester | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| NRNational Resilience INC | Marlborough | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| NENew England Biolabs, INC. | Rowley | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| NENew England Plastics | Woburn | MA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| NSNobrega Studio | Fall River | MA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| NBNortiva Bio INC | Lexington | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| NPNyacol Products Incorporated | Ashland | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| OIOlaris INC | Framingham | MA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| OTOmega Therapeutics INC | Cambridge | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| OTOmega Therapeutics INC | Cambridge | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| OEO'Tech East, LLC | Auburn | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| OIOxford Immunotec USA Marlborough | Marlborough | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PPPeak Performance Compounding LLC | Leominster | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PIPfizer INC | Cambridge | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| PBPharmaron Boston Laboratory Services LLC | Woburn | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PIPilgrim Innovative Plastics LLC | Plymouth | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PCPjc & Company Ecological Land Care INC | Rowley | MA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| PCP&K Custom Acrylics, Inc. | Malden | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PDPlastic Design, INC. | N Chelmsford | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
