Shoaib Manzoor

2 Questions 5 Answers 0 Followers

Questions related from Shoaib Manzoor

How can I assess purity via HRMS? What is the acceptable deviation from the calculated mass?

I have performed an HRMS experiment on many compounds and obtained the following; Compound 1. calculated [M+H]+: 554.2073 Found [M+H]+:554.2135 compound 2. calculated [M+H]+: 588.1684 Found...

29 October 2020 1,096 3 View

How is it possible for amide proton to show splitting in proton NMR?

I have done some proton NMR of compounds like N-(2-substitutedphenyl)acetamide derivatives. The chemical shift of amide proton ranges from 8.5 to 9. But some peaks amide proton shows singlet,...

20 October 2020 5,076 9 View