Cis-cyclopropane diisocyanate, also known as cis-1,2-diisocyanatocyclopropane, is a chemical compound with the molecular formula C6H8N2O2. It is an isomer of cyclopropane diisocyanate, characterized by the presence of two isocyanate functional groups (-NCO) attached to a cyclopropane ring. This无色液体 has a pungent odor and is used as a reactive intermediate in the synthesis of polyurethane foams, elastomers, and other polymers. Due to its high reactivity, it is typically handled under controlled conditions to prevent unwanted reactions and to ensure safety.
The CAS Registry Mumber 2177-51-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,7 and 7 respectively; the second part has 2 digits, 5 and 1 respectively. Calculate Digit Verification of CAS Registry Number 2177-51: (6*2)+(5*1)+(4*7)+(3*7)+(2*5)+(1*1)=77 77 % 10 = 7 So 2177-51-7 is a valid CAS Registry Number.