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Chemical structure of Reactive Black 5

GF03704

Reactive Black 5

Also known as tetrasodium;4-amino-5-hydroxy-3,6-bis[[4-(2-sulfonatooxyethylsulfonyl)phenyl]diazenyl]naphthalene-2,7-disulfonate

Reactive Black 5 (catalogue number GF03704) is a research-grade chemical available from LABO Scientific in Israel, CAS registry number 12225-25-1. Molecular formula C26H21N5Na4O19S6, molecular weight 991.816. IUPAC name: tetrasodium;4-amino-5-hydroxy-3,6-bis[[4-(2-sulfonatooxyethylsulfonyl)phenyl]diazenyl]naphthalene-2,7-disulfonate. Supplied in 3 pack sizes, from 25g at ₪179.47 to 500g at ₪1,448.02; the final price is confirmed on your quote, and the lot certificate of analysis and safety data sheet are emailed with your order confirmation.

ChemicalCAS12225-25-1MW991.816FormulaC26H21N5Na4O19S6
CAS number
12225-25-1
Molecular weight
991.816
Formula
C26H21N5Na4O19S6
InChIKey
HFIYIRIMGZMCPC-UHFFFAOYSA-J
Catalogue number
GF03704
Brand
GLPBIO
Computed properties PubChem CID 135442967 · TPSA 462 Ų · H-bond donors 2 · H-bond acceptors 24
TPSA
462 Ų
H-bond donors
2
H-bond acceptors
24
Rotatable bonds
12
Heavy atoms
60

SMILES C1=CC(=CC=C1N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)S(=O)(=O)CCOS(=O)(=O)[O-])N)O)S(=O)(=O)CCOS(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

Computed descriptors from PubChem (CID 135442967), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

Ordering in Israel

Lead time
Ships from the manufacturer to your lab in 8–14 business days; customs and cold chain handled by LABO Scientific.
Pricing
Quoted in ILS, excl. VAT. Add the item to your quote and we confirm the final price, usually the same business day.
Documents
Lot certificate of analysis and manufacturer SDS are emailed with your order confirmation.
Who we serve
Universities, hospitals and biotech companies across Israel. Research use only — not for diagnostic or therapeutic use.