+91 87673 60663 (INDIA) info@simsonpharma.com

Search products

Search by product name, CAT, CAS, molecular formula or chemical name.
+91 87673 60663 (INDIA) +91 99208 62389 (EXPORTS) info@simsonpharma.com export@simsonpharma.com Cart 0
SimSon — Science Standards Solutions SimSon Pharma Limited (old logo)
Trusted Partner for Reference Standards and Beyond
Products About Us Lab Facilities Quality System Our Divisions SimSon Chemtech Speciality & fine chemicals SimSon Chemie Research chemicals supply SimSon Lifescience Services CRO, CDMO & analytical testing Contact us Careers
Products About us Facility Quality system OUR DIVISIONS SimSon Chemtech Speciality & fine chemicals SimSon Chemie Research chemicals supply SimSon Lifescience Services CRO, CDMO & analytical testing Contact us Careers

Peptide impurities

Peptide impurities are byproducts like truncated, deletion, and oxidized sequences formed during synthesis or storage, identified by HPLC and MS analysis.

Impurity Standards

Calcitonin Salmon Impurity 7

CAT. No.C1380056 CAS No.NA Mol. F.C145H240N42O50S2 Mol. W.3435.90 g/mol Stock Status Custom Synthesis
COA MSDS

Calcitonin Salmon Impurity 8

CAT. No.C1380049 CAS No.NA Mol. F.C145H238N44O47S2 Mol. W.3413.90 g/mol Stock Status Custom Synthesis
COA MSDS

Calcitonin Trifluoroacetate

CAT. No.C1380023 CAS No.NA Mol. F.C145H238N44O47S2.C2H Mol. W.3527.92 g/mol Stock Status Custom Synthesis
COA MSDS

D His Leuprolide

CAT. No.L570037 CAS No.NA Mol. F.C59H84N16O12 Mol. W.1209.40 g/mol Stock Status Custom Synthesis
COA MSDS

D-(Ala)18-Tirzepatide

CAT. No.T1520065 CAS No.NA Mol. F.NA Mol. W.NA Stock Status Custom Synthesis
COA MSDS

D-(Pro)31-Tirzepatide

CAT. No.T1520064 CAS No.NA Mol. F.NA Mol. W.NA Stock Status Custom Synthesis
COA MSDS

D-Ala-19-Semaglutide

CAT. No.S1420016 CAS No.NA Mol. F.C187H291N45O59 Mol. W.4113.60 g/mol Stock Status Custom Synthesis
COA MSDS

D-Ala-24-Semaglutide

CAT. No.S1420019 CAS No.NA Mol. F.C187H291N45O59 Mol. W.4113.60 g/mol Stock Status Custom Synthesis
COA MSDS

D-Allo Thr 11

CAT. No.S1420058 CAS No.NA Mol. F.NA Mol. W.NA Stock Status Custom Synthesis
COA MSDS

D-Allo-Thr(11)-Liraglutide

CAT. No.L920045 CAS No.NA Mol. F.C172H265N43O51 Mol. W.3751.56 g/mol Stock Status Custom Synthesis
COA MSDS

D-Asp(9)-Semaglutide

CAT. No.S1420030 CAS No.NA Mol. F.C187H289N45O60 Mol. W.4113.64 g/mol Stock Status Custom Synthesis
COA MSDS

D-Beta-Asp9-Semaglutide

CAT. No.S1420018 CAS No.NA Mol. F.C187H291N45O59 Mol. W.4113.60 g/mol Stock Status Custom Synthesis
COA MSDS

D-Cys1-Salmon Calcitonin

CAT. No.C1380057 CAS No.NA Mol. F.C145H240N44O48S2 Mol. W.3431.90 g/mol Stock Status Custom Synthesis
COA MSDS

D-Cys7-Salmon Calcitonin

CAT. No.C1380062 CAS No.NA Mol. F.C145H240N44O48S2 Mol. W.3431.90 g/mol Stock Status Custom Synthesis
COA MSDS

D-Glu(15)-Semaglutide

CAT. No.S1420104 CAS No.NA Mol. F.C187H291N45O59 Mol. W.4113.64 g/mol Stock Status Custom Synthesis
COA MSDS

D-Glu(21)-Semaglutide

CAT. No.S1420095 CAS No.NA Mol. F.C187H291N45O59 Mol. W.4113.60 g/mol Stock Status Custom Synthesis
COA MSDS

D-Glu-Tirzepatide

CAT. No.T1520077 CAS No.2460751-66-8 Mol. F.C66H105N5O16 Mol. W.1224.56 g/mol Stock Status Custom Synthesis
COA MSDS

D-Glu23 Liraglutide Impurity

CAT. No.L920030 CAS No.NA Mol. F.C172H264N42O52 Mol. W.3752.20 g/mol Stock Status Custom Synthesis
COA MSDS

D-Glu23 Liraglutide Impurity

CAT. No.L920033 CAS No.NA Mol. F.C172H264N42O52 Mol. W.3752.20 g/mol Stock Status Custom Synthesis
COA MSDS

D-His-7 Liraglutide Impurity

CAT. No.L920026 CAS No.NA Mol. F.C172H265N43O51 Mol. W.3751.30 g/mol Stock Status Custom Synthesis
COA MSDS

D-His17-Salmon Calcitonin

CAT. No.C1380061 CAS No.NA Mol. F.C145H240N44O48S2 Mol. W.3431.90 g/mol Stock Status Custom Synthesis
COA MSDS

Product structure

Sample structure

Catalogue no.: — CAS no.: — Formula: — Mol. weight: —

Illustrative sample structure
SimSon — Science Standards Solutions
D-U-N-S Registered — Dun & Bradstreet D-U-N-S® REGISTERED Verified by Dun & Bradstreet
JOIN OUR NEWSLETTER
OFFICES & LABORATORIES
REGISTERED OFFICE · MUMBAI B-307, Sarita Building, Prabhat Industrial Estate, Near Dahisar Toll Naka, Dahisar (East), Mumbai- 400068, Maharashtra, India
CORPORATE OFFICE · MUMBAI Unit 1001-1006, The Platina, Tanvi Complex, S. V. Road, Dahisar East, Mumbai 400068, India
LABORATORY · HYDERABAD Shed 6A, TYPE III, TSIIC, Prashanthi Nagar, Kukatpally, Hyderabad 500072, India
REGIONAL OFFICE · AHMEDABAD Survey Number 375 Paiki 1, Plot Number 11, Shivam 5, Near Sumip Composite, Panchratna Estate, Village Changodar, Taluka Sanand, District Ahmedabad, Gujarat-382213
QUICK LINKS About us Contact us Products Lab Facilities Quality system Careers Blog FAQ Sitemap Download Brouchures
TALK TO THE RIGHT DESK
Indian customers +91 87673 60663 info@simsonpharma.com
International customers +91 99208 62389 exports@simsonpharma.com
Bio-analytics standards +91 99208 62983 cro@simsonpharma.com
Research chemicals +91 96193 57538 info@simsonpharma.com
Landline +91 22 4006 8689 / 4014 8689
© 2026 SimSon Pharma Limited · All rights reserved
Shipping policy Return policy Privacy Policy Terms & Conditions