The CAS Registry Mumber 857019-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,0,1 and 9 respectively; the second part has 2 digits, 9 and 9 respectively. Calculate Digit Verification of CAS Registry Number 857019-99: (8*8)+(7*5)+(6*7)+(5*0)+(4*1)+(3*9)+(2*9)+(1*9)=199 199 % 10 = 9 So 857019-99-9 is a valid CAS Registry Number.
857019-99-9Upstream product
857019-99-9Downstream Products
Post a RFQ
1
What can I do for you? Get Best Price
Get Best Price for857019-99-94,6,7-Trihydroxy-5-benzofuranacrylic acid delta-lactone