1227371-12-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1227371-12-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,7,3,7 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1227371-12:
(9*1)+(8*2)+(7*2)+(6*7)+(5*3)+(4*7)+(3*1)+(2*1)+(1*2)=131
131 % 10 = 1
So 1227371-12-1 is a valid CAS Registry Number.
1227371-12-1Relevant articles and documents
RING FLUORINATED REACTIVE DYES
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Page/Page column 22, (2010/07/10)
The present invention claims dyestuffs of the formula (I) wherein a, is 1 or 2; X1, X2, RG, R1, R2, R3, R4, a, b, c and M are defined as given in claim 1, a method for their preparation and their use.
